（三十二）c#Winform自定义控件-表格-HZHControls

周思荣 發表於 2019-8-16 16:27:00

（三十二）c#Winform自定义控件-表格-HZHControls

<h1>官网</h1>
https://www.hzhcontrols.cn
<h1>前提</h1>
入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。
GitHub：https://github.com/kwwwvagaa/NetWinformControl
码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
如果觉得写的还行，请点个 star 支持一下吧
欢迎前来交流探讨：企鹅群568015492 <img src="https://pub.idqqimg.com/wpa/images/group.png">
<h1>目录</h1>
https://www.cnblogs.com/bfyx/p/11364884.html
<h1>准备工作</h1>
表格控件将拆分为2部分，1：行元素控件，2：列表控件
为了具有更好的扩展性，更加的open，使用接口对行元素进行约束，当行样式或功能不满足你的需求的时候，可以自定义一个行元素，实现接口控件，然后将类型指定给列表控件即可
表格控件用到了分页控件，如果你还没有对分页控件进行了解，请移步查看
（十二）c#Winform自定义控件-分页控件
<h1>开始</h1>
定义一些辅助东西
<div class="cnblogs_code">
<pre>1public class DataGridViewCellEntity
2 {
3 public string Title { get; set; }
4 public int Width { get; set; }
5 public System.Windows.Forms.SizeType WidthType { get; set; }
6
7 }</pre>
</div>
<div class="cnblogs_code">
<pre>1 public class DataGridViewEventArgs : EventArgs
2 {
3 public Control CellControl { get; set; }
4 public int CellIndex { get; set; }
5 public int RowIndex { get; set; }
6
7
8 }</pre>
</div>
<div class="cnblogs_code">
<pre>1 
2
3 public delegate void DataGridViewEventHandler(object sender, DataGridViewEventArgs e);</pre>
</div>
<div class="cnblogs_code">
<pre>1 public class DataGridViewColumnEntity
2 {
3 public string HeadText { get; set; }
4 public int Width { get; set; }
5 public System.Windows.Forms.SizeType WidthType { get; set; }
6 public string DataField { get; set; }
7 public Func<object, string> Format { get; set; }
8 }</pre>
</div>
定义行接口
<div class="cnblogs_code">
<pre> 1public interface IDataGridViewRow
 2 {
 3 /// <summary>
 4 /// CheckBox选中事件
 5 /// </summary>
 6 event DataGridViewEventHandler CheckBoxChangeEvent;
 7 /// <summary>
 8 /// 点击单元格事件
 9 /// </summary>
10 event DataGridViewEventHandler CellClick;
11 /// <summary>
12 /// 数据源改变事件
13 /// </summary>
14 event DataGridViewEventHandler SourceChanged;
15 /// <summary>
16 /// 列参数，用于创建列数和宽度
17 /// </summary>
18 List<DataGridViewColumnEntity> Columns { get; set; }
19 bool IsShowCheckBox { get; set; }
20 /// <summary>
21 /// 是否选中
22 /// </summary>
23 bool IsChecked { get; set; }
24
25 /// <summary>
26 /// 数据源
27 /// </summary>
28 object DataSource { get; set; }
29 /// <summary>
30 /// 添加单元格元素，仅做添加控件操作，不做数据绑定，数据绑定使用BindingCells
31 /// </summary>
32 void ReloadCells();
33 /// <summary>
34 /// 绑定数据到Cell
35 /// </summary>
36 /// <param name="intIndex">cell下标</param>
37 /// <returns>返回true则表示已处理过，否则将进行默认绑定（通常只针对有Text值的控件）</returns>
38 void BindingCellData();
39 /// <summary>
40 /// 设置选中状态，通常为设置颜色即可
41 /// </summary>
42 /// <param name="blnSelected">是否选中</param>
43 void SetSelect(bool blnSelected);
44 }</pre>
</div>
创建行控件
添加一个用户控件，命名UCDataGridViewRow，实现接口IDataGridViewRow
属性
<div class="cnblogs_code">
<pre> 1 #region 属性
 2 public event DataGridViewEventHandler CheckBoxChangeEvent;
 3
 4 public event DataGridViewEventHandler CellClick;
 5
 6 public event DataGridViewEventHandler SourceChanged;
 7
 8 public List<DataGridViewColumnEntity> Columns
 9 {
10 get;
11 set;
12 }
13
14 public object DataSource
15 {
16 get;
17 set;
18 }
19
20 public bool IsShowCheckBox
21 {
22 get;
23 set;
24 }
25 private bool m_isChecked;
26 public bool IsChecked
27 {
28 get
29 {
30 return m_isChecked;
31 }
32
33 set
34 {
35 if (m_isChecked != value)
36 {
37 m_isChecked = value;
38 (this.panCells.Controls.Find("check", false)[0] as UCCheckBox).Checked = value;
39 }
40 }
41 }
42
43
44 #endregion</pre>
</div>
实现接口
<div class="cnblogs_code">
<pre>1 public void BindingCellData()
2 {
3 for (int i = 0; i < Columns.Count; i++)
4 {
5 DataGridViewColumnEntity com = Columns;
6 var cs = this.panCells.Controls.Find("lbl_" + com.DataField, false);
7 if (cs != null && cs.Length > 0)
8 {
9 var pro = DataSource.GetType().GetProperty(com.DataField);
 10 if (pro != null)
 11 {
 12 var value = pro.GetValue(DataSource, null);
 13 if (com.Format != null)
 14 {
 15 cs[0].Text = com.Format(value);
 16 }
 17 else
 18 {
 19 cs[0].Text = value.ToStringExt();
 20 }
 21 }
 22 }
 23 }
 24 }
 25
 26public void SetSelect(bool blnSelected)
 27 {
 28 if (blnSelected)
 29 {
 30 this.BackColor = Color.FromArgb(255, 247, 245);
 31 }
 32 else
 33 {
 34 this.BackColor = Color.Transparent;
 35 }
 36 }
 37
 38 public void ReloadCells()
 39 {
 40 try
 41 {
 42 ControlHelper.FreezeControl(this, true);
 43 this.panCells.Controls.Clear();
 44 this.panCells.ColumnStyles.Clear();
 45
 46 int intColumnsCount = Columns.Count();
 47 if (Columns != null && intColumnsCount > 0)
 48 {
 49 if (IsShowCheckBox)
 50 {
 51 intColumnsCount++;
 52 }
 53 this.panCells.ColumnCount = intColumnsCount;
 54 for (int i = 0; i < intColumnsCount; i++)
 55 {
 56 Control c = null;
 57 if (i == 0 && IsShowCheckBox)
 58 {
 59 this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F));
 60
 61 UCCheckBox box = new UCCheckBox();
 62 box.Name = "check";
 63 box.TextValue = "";
 64 box.Size = new Size(30, 30);
 65 box.Dock = DockStyle.Fill;
 66 box.CheckedChangeEvent += (a, b) =>
 67 {
 68 IsChecked = box.Checked;
 69 if (CheckBoxChangeEvent != null)
 70 {
 71 CheckBoxChangeEvent(a, new DataGridViewEventArgs()
 72 {
 73 CellControl = box,
 74 CellIndex = 0
 75 });
 76 }
 77 };
 78 c = box;
 79 }
 80 else
 81 {
 82 var item = Columns;
 83 this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
 84
 85 Label lbl = new Label();
 86 lbl.Tag = i - (IsShowCheckBox ? 1 : 0);
 87 lbl.Name = "lbl_" + item.DataField;
 88 lbl.Font = new Font("微软雅黑", 12);
 89 lbl.ForeColor = Color.Black;
 90 lbl.AutoSize = false;
 91 lbl.Dock = DockStyle.Fill;
 92 lbl.TextAlign = ContentAlignment.MiddleCenter;
 93 lbl.MouseDown += (a, b) =>
 94 {
 95 Item_MouseDown(a, b);
 96 };
 97 c = lbl;
 98 }
 99 this.panCells.Controls.Add(c, i, 0);
100 }
101
102 }
103 }
104 finally
105 {
106 ControlHelper.FreezeControl(this, false);
107 }
108 }</pre>
</div>
节点选中事件
<div class="cnblogs_code">
<pre> 1 void Item_MouseDown(object sender, MouseEventArgs e)
 2 {
 3 if (CellClick != null)
 4 {
 5 CellClick(sender, new DataGridViewEventArgs()
 6 {
 7 CellControl = this,
 8 CellIndex = (sender as Control).Tag.ToInt()
 9 });
10 }
11 }</pre>
</div>
完整的代码
<div class="cnblogs_code"><img src="http://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif"><img alt="" id="code_img_opened_2a2f4db4-1f29-4eb0-9073-fcd61bea1bae" class="code_img_opened lazyload" style="display: none" data-src="http://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif">
<div id="cnblogs_code_open_2a2f4db4-1f29-4eb0-9073-fcd61bea1bae" class="cnblogs_code_hide">
<pre>1 // 版权所有黄正辉交流群：568015492 QQ：623128629
2 // 文件名称：UCDataGridViewRow.cs
3 // 创建日期：2019-08-15 15:59:31
4 // 功能描述：DataGridView
5 // 项目地址：https://gitee.com/kwwwvagaa/net_winform_custom_control
6 using System;
7 using System.Collections.Generic;
8 using System.ComponentModel;
9 using System.Drawing;
 10 using System.Data;
 11 using System.Linq;
 12 using System.Text;
 13 using System.Windows.Forms;
 14
 15 namespace HZH_Controls.Controls
 16 {
 17
 18 public partial class UCDataGridViewRow : UserControl, IDataGridViewRow
 19 {
 20
 21 #region 属性
 22 public event DataGridViewEventHandler CheckBoxChangeEvent;
 23
 24 public event DataGridViewEventHandler CellClick;
 25
 26 public event DataGridViewEventHandler SourceChanged;
 27
 28 public List<DataGridViewColumnEntity> Columns
 29 {
 30 get;
 31 set;
 32 }
 33
 34 public object DataSource
 35 {
 36 get;
 37 set;
 38 }
 39
 40 public bool IsShowCheckBox
 41 {
 42 get;
 43 set;
 44 }
 45 private bool m_isChecked;
 46 public bool IsChecked
 47 {
 48 get
 49 {
 50 return m_isChecked;
 51 }
 52
 53 set
 54 {
 55 if (m_isChecked != value)
 56 {
 57 m_isChecked = value;
 58 (this.panCells.Controls.Find("check", false)[0] as UCCheckBox).Checked = value;
 59 }
 60 }
 61 }
 62
 63
 64 #endregion
 65
 66 public UCDataGridViewRow()
 67 {
 68 InitializeComponent();
 69 }
 70
 71 public void BindingCellData()
 72 {
 73 for (int i = 0; i < Columns.Count; i++)
 74 {
 75 DataGridViewColumnEntity com = Columns;
 76 var cs = this.panCells.Controls.Find("lbl_" + com.DataField, false);
 77 if (cs != null && cs.Length > 0)
 78 {
 79 var pro = DataSource.GetType().GetProperty(com.DataField);
 80 if (pro != null)
 81 {
 82 var value = pro.GetValue(DataSource, null);
 83 if (com.Format != null)
 84 {
 85 cs[0].Text = com.Format(value);
 86 }
 87 else
 88 {
 89 cs[0].Text = value.ToStringExt();
 90 }
 91 }
 92 }
 93 }
 94 }
 95
 96 void Item_MouseDown(object sender, MouseEventArgs e)
 97 {
 98 if (CellClick != null)
 99 {
100 CellClick(sender, new DataGridViewEventArgs()
101 {
102 CellControl = this,
103 CellIndex = (sender as Control).Tag.ToInt()
104 });
105 }
106 }
107
108 public void SetSelect(bool blnSelected)
109 {
110 if (blnSelected)
111 {
112 this.BackColor = Color.FromArgb(255, 247, 245);
113 }
114 else
115 {
116 this.BackColor = Color.Transparent;
117 }
118 }
119
120 public void ReloadCells()
121 {
122 try
123 {
124 ControlHelper.FreezeControl(this, true);
125 this.panCells.Controls.Clear();
126 this.panCells.ColumnStyles.Clear();
127
128 int intColumnsCount = Columns.Count();
129 if (Columns != null && intColumnsCount > 0)
130 {
131 if (IsShowCheckBox)
132 {
133 intColumnsCount++;
134 }
135 this.panCells.ColumnCount = intColumnsCount;
136 for (int i = 0; i < intColumnsCount; i++)
137 {
138 Control c = null;
139 if (i == 0 && IsShowCheckBox)
140 {
141 this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F));
142
143 UCCheckBox box = new UCCheckBox();
144 box.Name = "check";
145 box.TextValue = "";
146 box.Size = new Size(30, 30);
147 box.Dock = DockStyle.Fill;
148 box.CheckedChangeEvent += (a, b) =>
149 {
150 IsChecked = box.Checked;
151 if (CheckBoxChangeEvent != null)
152 {
153 CheckBoxChangeEvent(a, new DataGridViewEventArgs()
154 {
155 CellControl = box,
156 CellIndex = 0
157 });
158 }
159 };
160 c = box;
161 }
162 else
163 {
164 var item = Columns;
165 this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
166
167 Label lbl = new Label();
168 lbl.Tag = i - (IsShowCheckBox ? 1 : 0);
169 lbl.Name = "lbl_" + item.DataField;
170 lbl.Font = new Font("微软雅黑", 12);
171 lbl.ForeColor = Color.Black;
172 lbl.AutoSize = false;
173 lbl.Dock = DockStyle.Fill;
174 lbl.TextAlign = ContentAlignment.MiddleCenter;
175 lbl.MouseDown += (a, b) =>
176 {
177 Item_MouseDown(a, b);
178 };
179 c = lbl;
180 }
181 this.panCells.Controls.Add(c, i, 0);
182 }
183
184 }
185 }
186 finally
187 {
188 ControlHelper.FreezeControl(this, false);
189 }
190 }
191
192
193 }
194 }</pre>
</div>
View Code</div>
<div class="cnblogs_code"><img alt="" id="code_img_closed_a3f77a5d-c0e6-4ca6-a5dd-98ebda0467ba" class="code_img_closed lazyload" data-src="http://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif"><img alt="" id="code_img_opened_a3f77a5d-c0e6-4ca6-a5dd-98ebda0467ba" class="code_img_opened lazyload" style="display: none" data-src="http://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif">
<div id="cnblogs_code_open_a3f77a5d-c0e6-4ca6-a5dd-98ebda0467ba" class="cnblogs_code_hide">
<pre> 1 namespace HZH_Controls.Controls
 2 {
 3 partial class UCDataGridViewRow
 4 {
 5 /// <summary>
 6 /// 必需的设计器变量。
 7 /// </summary>
 8 private System.ComponentModel.IContainer components = null;
 9
10 /// <summary>
11 /// 清理所有正在使用的资源。
12 /// </summary>
13 /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
14 protected override void Dispose(bool disposing)
15 {
16 if (disposing && (components != null))
17 {
18 components.Dispose();
19 }
20 base.Dispose(disposing);
21 }
22
23 #region 组件设计器生成的代码
24
25 /// <summary>
26 /// 设计器支持所需的方法 - 不要
27 /// 使用代码编辑器修改此方法的内容。
28 /// </summary>
29 private void InitializeComponent()
30 {
31 this.ucSplitLine_H1 = new HZH_Controls.Controls.UCSplitLine_H();
32 this.panCells = new System.Windows.Forms.TableLayoutPanel();
33 this.SuspendLayout();
34 //
35 // ucSplitLine_H1
36 //
37 this.ucSplitLine_H1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
38 this.ucSplitLine_H1.Dock = System.Windows.Forms.DockStyle.Bottom;
39 this.ucSplitLine_H1.Location = new System.Drawing.Point(0, 55);
40 this.ucSplitLine_H1.Name = "ucSplitLine_H1";
41 this.ucSplitLine_H1.Size = new System.Drawing.Size(661, 1);
42 this.ucSplitLine_H1.TabIndex = 0;
43 this.ucSplitLine_H1.TabStop = false;
44 //
45 // panCells
46 //
47 this.panCells.ColumnCount = 1;
48 this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));
49 this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Absolute, 20F));
50 this.panCells.Dock = System.Windows.Forms.DockStyle.Fill;
51 this.panCells.Location = new System.Drawing.Point(0, 0);
52 this.panCells.Name = "panCells";
53 this.panCells.RowCount = 1;
54 this.panCells.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
55 this.panCells.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
56 this.panCells.Size = new System.Drawing.Size(661, 55);
57 this.panCells.TabIndex = 1;
58 //
59 // UCDataGridViewItem
60 //
61 this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
62 this.BackColor = System.Drawing.Color.White;
63 this.Controls.Add(this.panCells);
64 this.Controls.Add(this.ucSplitLine_H1);
65 this.Name = "UCDataGridViewItem";
66 this.Size = new System.Drawing.Size(661, 56);
67 this.ResumeLayout(false);
68
69 }
70
71 #endregion
72
73 private UCSplitLine_H ucSplitLine_H1;
74 private System.Windows.Forms.TableLayoutPanel panCells;
75 }
76 }</pre>
</div>
View Code</div>
 
接下来就是列表控件了
添加一个用户控件，命名UCDataGridView
属性
<div class="cnblogs_code">
<pre>1#region 属性
2 private Font m_headFont = new Font("微软雅黑", 12F);
3 /// <summary>
4 /// 标题字体
5 /// </summary>
6
7 public Font HeadFont
8 {
9 get { return m_headFont; }
 10 set { m_headFont = value; }
 11 }
 12 private Color m_headTextColor = Color.Black;
 13 /// <summary>
 14 /// 标题字体颜色
 15 /// </summary>
 16
 17 public Color HeadTextColor
 18 {
 19 get { return m_headTextColor; }
 20 set { m_headTextColor = value; }
 21 }
 22
 23 private bool m_isShowHead = true;
 24 /// <summary>
 25 /// 是否显示标题
 26 /// </summary>
 27
 28 public bool IsShowHead
 29 {
 30 get { return m_isShowHead; }
 31 set
 32 {
 33 m_isShowHead = value;
 34 panHead.Visible = value;
 35 if (m_page != null)
 36 {
 37 ResetShowCount();
 38 m_page.PageSize = m_showCount;
 39 }
 40 }
 41 }
 42 private int m_headHeight = 40;
 43 /// <summary>
 44 /// 标题高度
 45 /// </summary>
 46
 47 public int HeadHeight
 48 {
 49 get { return m_headHeight; }
 50 set
 51 {
 52 m_headHeight = value;
 53 panHead.Height = value;
 54 }
 55 }
 56
 57 private bool m_isShowCheckBox = false;
 58 /// <summary>
 59 /// 是否显示复选框
 60 /// </summary>
 61
 62 public bool IsShowCheckBox
 63 {
 64 get { return m_isShowCheckBox; }
 65 set
 66 {
 67 if (value != m_isShowCheckBox)
 68 {
 69 m_isShowCheckBox = value;
 70 LoadColumns();
 71 }
 72 }
 73 }
 74
 75 private int m_rowHeight = 40;
 76 /// <summary>
 77 /// 行高
 78 /// </summary>
 79
 80 public int RowHeight
 81 {
 82 get { return m_rowHeight; }
 83 set { m_rowHeight = value; }
 84 }
 85
 86 private int m_showCount = 0;
 87 /// <summary>
 88 ///
 89 /// </summary>
 90
 91 public int ShowCount
 92 {
 93 get { return m_showCount; }
 94 private set
 95 {
 96 m_showCount = value;
 97 if (m_page != null)
 98 {
 99 m_page.PageSize = value;
100 }
101 }
102 }
103
104 private List<DataGridViewColumnEntity> m_columns;
105 /// <summary>
106 /// 列
107 /// </summary>
108
109 public List<DataGridViewColumnEntity> Columns
110 {
111 get { return m_columns; }
112 set
113 {
114 m_columns = value;
115 LoadColumns();
116 }
117 }
118
119 private object m_dataSource;
120 /// <summary>
121 /// 数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource
122 /// </summary>
123
124 public object DataSource
125 {
126 get { return m_dataSource; }
127 set
128 {
129 if (value == null)
130 return;
131 if (!(m_dataSource is DataTable) && (!typeof(IList).IsAssignableFrom(value.GetType())))
132 {
133 throw new Exception("数据源不是有效的数据类型，请使用Datatable或列表");
134 }
135
136 m_dataSource = value;
137 ReloadSource();
138 }
139 }
140
141 public List<IDataGridViewRow> Rows { get; private set; }
142
143 private Type m_rowType = typeof(UCDataGridViewRow);
144 /// <summary>
145 /// 行元素类型，默认UCDataGridViewItem
146 /// </summary>
147
148 public Type RowType
149 {
150 get { return m_rowType; }
151 set
152 {
153 if (value == null)
154 return;
155 if (!typeof(IDataGridViewRow).IsAssignableFrom(value) || !value.IsSubclassOf(typeof(Control)))
156 throw new Exception("行控件没有实现IDataGridViewRow接口");
157 m_rowType = value;
158 }
159 }
160 IDataGridViewRow m_selectRow = null;
161 /// <summary>
162 /// 选中的节点
163 /// </summary>
164
165 public IDataGridViewRow SelectRow
166 {
167 get { return m_selectRow; }
168 private set { m_selectRow = value; }
169 }
170
171
172 /// <summary>
173 /// 选中的行，如果显示CheckBox，则以CheckBox选中为准
174 /// </summary>
175
176 public List<IDataGridViewRow> SelectRows
177 {
178 get
179 {
180 if (m_isShowCheckBox)
181 {
182 return Rows.FindAll(p => p.IsChecked);
183 }
184 else
185 return new List<IDataGridViewRow>() { m_selectRow };
186 }
187 }
188
189
190 private UCPagerControlBase m_page = null;
191 /// <summary>
192 /// 翻页控件
193 /// </summary>
194
195 public UCPagerControlBase Page
196 {
197 get { return m_page; }
198 set
199 {
200 m_page = value;
201 if (value != null)
202 {
203 if (!typeof(IPageControl).IsAssignableFrom(value.GetType()) || !value.GetType().IsSubclassOf(typeof(UCPagerControlBase)))
204 throw new Exception("翻页控件没有继承UCPagerControlBase");
205 panPage.Visible = value != null;
206 m_page.ShowSourceChanged += page_ShowSourceChanged;
207 m_page.Dock = DockStyle.Fill;
208 this.panPage.Controls.Clear();
209 this.panPage.Controls.Add(m_page);
210 ResetShowCount();
211 m_page.PageSize = ShowCount;
212 this.DataSource = m_page.GetCurrentSource();
213 }
214 else
215 {
216 m_page = null;
217 }
218 }
219 }
220
221 void page_ShowSourceChanged(object currentSource)
222 {
223 this.DataSource = currentSource;
224 }
225
226 #region 事件
227
228 public EventHandler HeadCheckBoxChangeEvent;
229
230 public EventHandler HeadColumnClickEvent;
231
232 public event DataGridViewEventHandler ItemClick;
233
234 public event DataGridViewEventHandler SourceChanged;
235 #endregion
236 #endregion</pre>
</div>
一些私有的方法
<div class="cnblogs_code">
<pre> 1 #region 私有方法
 2 #region 加载column
 3 /// <summary>
 4 /// 功能描述:加载column
 5 /// 作　　者:HZH
 6 /// 创建日期:2019-08-08 17:51:50
 7 /// 任务编号:POS
 8 /// </summary>
 9 private void LoadColumns()
10 {
11 try
12 {
13 if (DesignMode)
14 { return; }
15
16 ControlHelper.FreezeControl(this.panHead, true);
17 this.panColumns.Controls.Clear();
18 this.panColumns.ColumnStyles.Clear();
19
20 if (m_columns != null && m_columns.Count() > 0)
21 {
22 int intColumnsCount = m_columns.Count();
23 if (m_isShowCheckBox)
24 {
25 intColumnsCount++;
26 }
27 this.panColumns.ColumnCount = intColumnsCount;
28 for (int i = 0; i < intColumnsCount; i++)
29 {
30 Control c = null;
31 if (i == 0 && m_isShowCheckBox)
32 {
33 this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F));
34
35 UCCheckBox box = new UCCheckBox();
36 box.TextValue = "";
37 box.Size = new Size(30, 30);
38 box.CheckedChangeEvent += (a, b) =>
39 {
40 Rows.ForEach(p => p.IsChecked = box.Checked);
41 if (HeadCheckBoxChangeEvent != null)
42 {
43 HeadCheckBoxChangeEvent(a, b);
44 }
45 };
46 c = box;
47 }
48 else
49 {
50 var item = m_columns;
51 this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
52 Label lbl = new Label();
53 lbl.Name = "dgvColumns_" + i;
54 lbl.Text = item.HeadText;
55 lbl.Font = m_headFont;
56 lbl.ForeColor = m_headTextColor;
57 lbl.TextAlign = ContentAlignment.MiddleCenter;
58 lbl.AutoSize = false;
59 lbl.Dock = DockStyle.Fill;
60 lbl.MouseDown += (a, b) =>
61 {
62 if (HeadColumnClickEvent != null)
63 {
64 HeadColumnClickEvent(a, b);
65 }
66 };
67 c = lbl;
68 }
69 this.panColumns.Controls.Add(c, i, 0);
70 }
71
72 }
73 }
74 finally
75 {
76 ControlHelper.FreezeControl(this.panHead, false);
77 }
78 }
79 #endregion
80
81 /// <summary>
82 /// 功能描述:获取显示个数
83 /// 作　　者:HZH
84 /// 创建日期:2019-03-05 10:02:58
85 /// 任务编号:POS
86 /// </summary>
87 /// <returns>返回值</returns>
88 private void ResetShowCount()
89 {
90 if (DesignMode)
91 { return; }
92 ShowCount = this.panRow.Height / (m_rowHeight);
93 int intCha = this.panRow.Height % (m_rowHeight);
94 m_rowHeight += intCha / ShowCount;
95 }
96 #endregion</pre>
</div>
几个事件
<div class="cnblogs_code">
<pre> 1#region 事件
 2 void RowSourceChanged(object sender, DataGridViewEventArgs e)
 3 {
 4 if (SourceChanged != null)
 5 SourceChanged(sender, e);
 6 }
 7 private void SetSelectRow(Control item, DataGridViewEventArgs e)
 8 {
 9 try
10 {
11 ControlHelper.FreezeControl(this, true);
12 if (item == null)
13 return;
14 if (item.Visible == false)
15 return;
16 this.FindForm().ActiveControl = this;
17 this.FindForm().ActiveControl = item;
18 if (m_selectRow != null)
19 {
20 if (m_selectRow == item)
21 return;
22 m_selectRow.SetSelect(false);
23 }
24 m_selectRow = item as IDataGridViewRow;
25 m_selectRow.SetSelect(true);
26 if (ItemClick != null)
27 {
28 ItemClick(item, e);
29 }
30 if (this.panRow.Controls.Count > 0)
31 {
32 if (item.Location.Y < 0)
33 {
34 this.panRow.AutoScrollPosition = new Point(0, Math.Abs(this.panRow.Controls[this.panRow.Controls.Count - 1].Location.Y) + item.Location.Y);
35 }
36 else if (item.Location.Y + m_rowHeight > this.panRow.Height)
37 {
38 this.panRow.AutoScrollPosition = new Point(0, Math.Abs(this.panRow.AutoScrollPosition.Y) + item.Location.Y - this.panRow.Height + m_rowHeight);
39 }
40 }
41 }
42 finally
43 {
44 ControlHelper.FreezeControl(this, false);
45 }
46 }
47 private void UCDataGridView_Resize(object sender, EventArgs e)
48 {
49 ResetShowCount();
50 ReloadSource();
51 }
52 #endregion</pre>
</div>
对外公开的函数
<div class="cnblogs_code">
<pre>1#region 公共函数
2 /// <summary>
3 /// 刷新数据
4 /// </summary>
5 public void ReloadSource()
6 {
7 if (DesignMode)
8 { return; }
9 try
 10 {
 11 if (m_columns == null || m_columns.Count <= 0)
 12 return;
 13
 14 ControlHelper.FreezeControl(this.panRow, true);
 15 this.panRow.Controls.Clear();
 16 Rows = new List<IDataGridViewRow>();
 17 if (m_dataSource != null)
 18 {
 19 int intIndex = 0;
 20 Control lastItem = null;
 21
 22 int intSourceCount = 0;
 23 if (m_dataSource is DataTable)
 24 {
 25 intSourceCount = (m_dataSource as DataTable).Rows.Count;
 26 }
 27 else if (typeof(IList).IsAssignableFrom(m_dataSource.GetType()))
 28 {
 29 intSourceCount = (m_dataSource as IList).Count;
 30 }
 31
 32 foreach (Control item in this.panRow.Controls)
 33 {
 34
 35
 36 if (intIndex >= intSourceCount)
 37 {
 38 item.Visible = false;
 39 }
 40 else
 41 {
 42 var row = (item as IDataGridViewRow);
 43 row.IsShowCheckBox = m_isShowCheckBox;
 44 if (m_dataSource is DataTable)
 45 {
 46 row.DataSource = (m_dataSource as DataTable).Rows;
 47 }
 48 else
 49 {
 50 row.DataSource = (m_dataSource as IList);
 51 }
 52 row.BindingCellData();
 53 item.Height = m_rowHeight;
 54 item.Visible = true;
 55 item.BringToFront();
 56 if (lastItem == null)
 57 lastItem = item;
 58 Rows.Add(row);
 59 }
 60 intIndex++;
 61 }
 62
 63 if (intIndex < intSourceCount)
 64 {
 65 for (int i = intIndex; i < intSourceCount; i++)
 66 {
 67 IDataGridViewRow row = (IDataGridViewRow)Activator.CreateInstance(m_rowType);
 68 if (m_dataSource is DataTable)
 69 {
 70 row.DataSource = (m_dataSource as DataTable).Rows;
 71 }
 72 else
 73 {
 74 row.DataSource = (m_dataSource as IList);
 75 }
 76 row.Columns = m_columns;
 77 List<Control> lstCells = new List<Control>();
 78 row.IsShowCheckBox = m_isShowCheckBox;
 79 row.ReloadCells();
 80 row.BindingCellData();
 81
 82
 83 Control rowControl = (row as Control);
 84 rowControl.Height = m_rowHeight;
 85 this.panRow.Controls.Add(rowControl);
 86 rowControl.Dock = DockStyle.Top;
 87 row.CellClick += (a, b) => { SetSelectRow(rowControl, b); };
 88 row.CheckBoxChangeEvent += (a, b) => { SetSelectRow(rowControl, b); };
 89 row.SourceChanged += RowSourceChanged;
 90 rowControl.BringToFront();
 91 Rows.Add(row);
 92
 93 if (lastItem == null)
 94 lastItem = rowControl;
 95 }
 96 }
 97 if (lastItem != null && intSourceCount == m_showCount)
 98 {
 99 lastItem.Height = this.panRow.Height - (m_showCount - 1) * m_rowHeight;
100 }
101 }
102 }
103 finally
104 {
105 ControlHelper.FreezeControl(this.panRow, false);
106 }
107 }
108
109
110 /// <summary>
111 /// 快捷键
112 /// </summary>
113 /// <param name="msg"></param>
114 /// <param name="keyData"></param>
115 /// <returns></returns>
116 protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
117 {
118 if (keyData == Keys.Up)
119 {
120 Previous();
121 }
122 else if (keyData == Keys.Down)
123 {
124 Next();
125 }
126 else if (keyData == Keys.Home)
127 {
128 First();
129 }
130 else if (keyData == Keys.End)
131 {
132 End();
133 }
134 return base.ProcessCmdKey(ref msg, keyData);
135 }
136 /// <summary>
137 /// 选中第一个
138 /// </summary>
139 public void First()
140 {
141 if (Rows == null || Rows.Count <= 0)
142 return;
143 Control c = null;
144 c = (Rows[0] as Control);
145 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = 0 });
146 }
147 /// <summary>
148 /// 选中上一个
149 /// </summary>
150 public void Previous()
151 {
152 if (Rows == null || Rows.Count <= 0)
153 return;
154 Control c = null;
155
156 int index = Rows.IndexOf(m_selectRow);
157 if (index - 1 >= 0)
158 {
159 c = (Rows as Control);
160 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index - 1 });
161 }
162 }
163 /// <summary>
164 /// 选中下一个
165 /// </summary>
166 public void Next()
167 {
168 if (Rows == null || Rows.Count <= 0)
169 return;
170 Control c = null;
171
172 int index = Rows.IndexOf(m_selectRow);
173 if (index + 1 < Rows.Count)
174 {
175 c = (Rows as Control);
176 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index + 1 });
177 }
178 }
179 /// <summary>
180 /// 选中最后一个
181 /// </summary>
182 public void End()
183 {
184 if (Rows == null || Rows.Count <= 0)
185 return;
186 Control c = null;
187 c = (Rows as Control);
188 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = Rows.Count - 1 });
189 }
190
191 #endregion</pre>
</div>
完整代码
<div class="cnblogs_code"><img alt="" id="code_img_closed_078db357-14a2-4424-91f4-263aac7db5ab" class="code_img_closed lazyload" data-src="http://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif"><img alt="" id="code_img_opened_078db357-14a2-4424-91f4-263aac7db5ab" class="code_img_opened lazyload" style="display: none" data-src="http://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif">
<div id="cnblogs_code_open_078db357-14a2-4424-91f4-263aac7db5ab" class="cnblogs_code_hide">
<pre>1 // 版权所有黄正辉交流群：568015492 QQ：623128629
2 // 文件名称：UCDataGridView.cs
3 // 创建日期：2019-08-15 15:59:25
4 // 功能描述：DataGridView
5 // 项目地址：https://gitee.com/kwwwvagaa/net_winform_custom_control
6 using System;
7 using System.Collections.Generic;
8 using System.ComponentModel;
9 using System.Drawing;
 10 using System.Data;
 11 using System.Linq;
 12 using System.Text;
 13 using System.Windows.Forms;
 14 using System.Collections;
 15
 16 namespace HZH_Controls.Controls
 17 {
 18 public partial class UCDataGridView : UserControl
 19 {
 20 #region 属性
 21 private Font m_headFont = new Font("微软雅黑", 12F);
 22 /// <summary>
 23 /// 标题字体
 24 /// </summary>
 25
 26 public Font HeadFont
 27 {
 28 get { return m_headFont; }
 29 set { m_headFont = value; }
 30 }
 31 private Color m_headTextColor = Color.Black;
 32 /// <summary>
 33 /// 标题字体颜色
 34 /// </summary>
 35
 36 public Color HeadTextColor
 37 {
 38 get { return m_headTextColor; }
 39 set { m_headTextColor = value; }
 40 }
 41
 42 private bool m_isShowHead = true;
 43 /// <summary>
 44 /// 是否显示标题
 45 /// </summary>
 46
 47 public bool IsShowHead
 48 {
 49 get { return m_isShowHead; }
 50 set
 51 {
 52 m_isShowHead = value;
 53 panHead.Visible = value;
 54 if (m_page != null)
 55 {
 56 ResetShowCount();
 57 m_page.PageSize = m_showCount;
 58 }
 59 }
 60 }
 61 private int m_headHeight = 40;
 62 /// <summary>
 63 /// 标题高度
 64 /// </summary>
 65
 66 public int HeadHeight
 67 {
 68 get { return m_headHeight; }
 69 set
 70 {
 71 m_headHeight = value;
 72 panHead.Height = value;
 73 }
 74 }
 75
 76 private bool m_isShowCheckBox = false;
 77 /// <summary>
 78 /// 是否显示复选框
 79 /// </summary>
 80
 81 public bool IsShowCheckBox
 82 {
 83 get { return m_isShowCheckBox; }
 84 set
 85 {
 86 if (value != m_isShowCheckBox)
 87 {
 88 m_isShowCheckBox = value;
 89 LoadColumns();
 90 }
 91 }
 92 }
 93
 94 private int m_rowHeight = 40;
 95 /// <summary>
 96 /// 行高
 97 /// </summary>
 98
 99 public int RowHeight
100 {
101 get { return m_rowHeight; }
102 set { m_rowHeight = value; }
103 }
104
105 private int m_showCount = 0;
106 /// <summary>
107 ///
108 /// </summary>
109
110 public int ShowCount
111 {
112 get { return m_showCount; }
113 private set
114 {
115 m_showCount = value;
116 if (m_page != null)
117 {
118 m_page.PageSize = value;
119 }
120 }
121 }
122
123 private List<DataGridViewColumnEntity> m_columns;
124 /// <summary>
125 /// 列
126 /// </summary>
127
128 public List<DataGridViewColumnEntity> Columns
129 {
130 get { return m_columns; }
131 set
132 {
133 m_columns = value;
134 LoadColumns();
135 }
136 }
137
138 private object m_dataSource;
139 /// <summary>
140 /// 数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource
141 /// </summary>
142
143 public object DataSource
144 {
145 get { return m_dataSource; }
146 set
147 {
148 if (value == null)
149 return;
150 if (!(m_dataSource is DataTable) && (!typeof(IList).IsAssignableFrom(value.GetType())))
151 {
152 throw new Exception("数据源不是有效的数据类型，请使用Datatable或列表");
153 }
154
155 m_dataSource = value;
156 ReloadSource();
157 }
158 }
159
160 public List<IDataGridViewRow> Rows { get; private set; }
161
162 private Type m_rowType = typeof(UCDataGridViewRow);
163 /// <summary>
164 /// 行元素类型，默认UCDataGridViewItem
165 /// </summary>
166
167 public Type RowType
168 {
169 get { return m_rowType; }
170 set
171 {
172 if (value == null)
173 return;
174 if (!typeof(IDataGridViewRow).IsAssignableFrom(value) || !value.IsSubclassOf(typeof(Control)))
175 throw new Exception("行控件没有实现IDataGridViewRow接口");
176 m_rowType = value;
177 }
178 }
179 IDataGridViewRow m_selectRow = null;
180 /// <summary>
181 /// 选中的节点
182 /// </summary>
183
184 public IDataGridViewRow SelectRow
185 {
186 get { return m_selectRow; }
187 private set { m_selectRow = value; }
188 }
189
190
191 /// <summary>
192 /// 选中的行，如果显示CheckBox，则以CheckBox选中为准
193 /// </summary>
194
195 public List<IDataGridViewRow> SelectRows
196 {
197 get
198 {
199 if (m_isShowCheckBox)
200 {
201 return Rows.FindAll(p => p.IsChecked);
202 }
203 else
204 return new List<IDataGridViewRow>() { m_selectRow };
205 }
206 }
207
208
209 private UCPagerControlBase m_page = null;
210 /// <summary>
211 /// 翻页控件
212 /// </summary>
213
214 public UCPagerControlBase Page
215 {
216 get { return m_page; }
217 set
218 {
219 m_page = value;
220 if (value != null)
221 {
222 if (!typeof(IPageControl).IsAssignableFrom(value.GetType()) || !value.GetType().IsSubclassOf(typeof(UCPagerControlBase)))
223 throw new Exception("翻页控件没有继承UCPagerControlBase");
224 panPage.Visible = value != null;
225 m_page.ShowSourceChanged += page_ShowSourceChanged;
226 m_page.Dock = DockStyle.Fill;
227 this.panPage.Controls.Clear();
228 this.panPage.Controls.Add(m_page);
229 ResetShowCount();
230 m_page.PageSize = ShowCount;
231 this.DataSource = m_page.GetCurrentSource();
232 }
233 else
234 {
235 m_page = null;
236 }
237 }
238 }
239
240 void page_ShowSourceChanged(object currentSource)
241 {
242 this.DataSource = currentSource;
243 }
244
245 #region 事件
246
247 public EventHandler HeadCheckBoxChangeEvent;
248
249 public EventHandler HeadColumnClickEvent;
250
251 public event DataGridViewEventHandler ItemClick;
252
253 public event DataGridViewEventHandler SourceChanged;
254 #endregion
255 #endregion
256
257 public UCDataGridView()
258 {
259 InitializeComponent();
260 }
261
262 #region 私有方法
263 #region 加载column
264 /// <summary>
265 /// 功能描述:加载column
266 /// 作　　者:HZH
267 /// 创建日期:2019-08-08 17:51:50
268 /// 任务编号:POS
269 /// </summary>
270 private void LoadColumns()
271 {
272 try
273 {
274 if (DesignMode)
275 { return; }
276
277 ControlHelper.FreezeControl(this.panHead, true);
278 this.panColumns.Controls.Clear();
279 this.panColumns.ColumnStyles.Clear();
280
281 if (m_columns != null && m_columns.Count() > 0)
282 {
283 int intColumnsCount = m_columns.Count();
284 if (m_isShowCheckBox)
285 {
286 intColumnsCount++;
287 }
288 this.panColumns.ColumnCount = intColumnsCount;
289 for (int i = 0; i < intColumnsCount; i++)
290 {
291 Control c = null;
292 if (i == 0 && m_isShowCheckBox)
293 {
294 this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F));
295
296 UCCheckBox box = new UCCheckBox();
297 box.TextValue = "";
298 box.Size = new Size(30, 30);
299 box.CheckedChangeEvent += (a, b) =>
300 {
301 Rows.ForEach(p => p.IsChecked = box.Checked);
302 if (HeadCheckBoxChangeEvent != null)
303 {
304 HeadCheckBoxChangeEvent(a, b);
305 }
306 };
307 c = box;
308 }
309 else
310 {
311 var item = m_columns;
312 this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
313 Label lbl = new Label();
314 lbl.Name = "dgvColumns_" + i;
315 lbl.Text = item.HeadText;
316 lbl.Font = m_headFont;
317 lbl.ForeColor = m_headTextColor;
318 lbl.TextAlign = ContentAlignment.MiddleCenter;
319 lbl.AutoSize = false;
320 lbl.Dock = DockStyle.Fill;
321 lbl.MouseDown += (a, b) =>
322 {
323 if (HeadColumnClickEvent != null)
324 {
325 HeadColumnClickEvent(a, b);
326 }
327 };
328 c = lbl;
329 }
330 this.panColumns.Controls.Add(c, i, 0);
331 }
332
333 }
334 }
335 finally
336 {
337 ControlHelper.FreezeControl(this.panHead, false);
338 }
339 }
340 #endregion
341
342 /// <summary>
343 /// 功能描述:获取显示个数
344 /// 作　　者:HZH
345 /// 创建日期:2019-03-05 10:02:58
346 /// 任务编号:POS
347 /// </summary>
348 /// <returns>返回值</returns>
349 private void ResetShowCount()
350 {
351 if (DesignMode)
352 { return; }
353 ShowCount = this.panRow.Height / (m_rowHeight);
354 int intCha = this.panRow.Height % (m_rowHeight);
355 m_rowHeight += intCha / ShowCount;
356 }
357 #endregion
358
359 #region 公共函数
360 /// <summary>
361 /// 刷新数据
362 /// </summary>
363 public void ReloadSource()
364 {
365 if (DesignMode)
366 { return; }
367 try
368 {
369 if (m_columns == null || m_columns.Count <= 0)
370 return;
371
372 ControlHelper.FreezeControl(this.panRow, true);
373 this.panRow.Controls.Clear();
374 Rows = new List<IDataGridViewRow>();
375 if (m_dataSource != null)
376 {
377 int intIndex = 0;
378 Control lastItem = null;
379
380 int intSourceCount = 0;
381 if (m_dataSource is DataTable)
382 {
383 intSourceCount = (m_dataSource as DataTable).Rows.Count;
384 }
385 else if (typeof(IList).IsAssignableFrom(m_dataSource.GetType()))
386 {
387 intSourceCount = (m_dataSource as IList).Count;
388 }
389
390 foreach (Control item in this.panRow.Controls)
391 {
392
393
394 if (intIndex >= intSourceCount)
395 {
396 item.Visible = false;
397 }
398 else
399 {
400 var row = (item as IDataGridViewRow);
401 row.IsShowCheckBox = m_isShowCheckBox;
402 if (m_dataSource is DataTable)
403 {
404 row.DataSource = (m_dataSource as DataTable).Rows;
405 }
406 else
407 {
408 row.DataSource = (m_dataSource as IList);
409 }
410 row.BindingCellData();
411 item.Height = m_rowHeight;
412 item.Visible = true;
413 item.BringToFront();
414 if (lastItem == null)
415 lastItem = item;
416 Rows.Add(row);
417 }
418 intIndex++;
419 }
420
421 if (intIndex < intSourceCount)
422 {
423 for (int i = intIndex; i < intSourceCount; i++)
424 {
425 IDataGridViewRow row = (IDataGridViewRow)Activator.CreateInstance(m_rowType);
426 if (m_dataSource is DataTable)
427 {
428 row.DataSource = (m_dataSource as DataTable).Rows;
429 }
430 else
431 {
432 row.DataSource = (m_dataSource as IList);
433 }
434 row.Columns = m_columns;
435 List<Control> lstCells = new List<Control>();
436 row.IsShowCheckBox = m_isShowCheckBox;
437 row.ReloadCells();
438 row.BindingCellData();
439
440
441 Control rowControl = (row as Control);
442 rowControl.Height = m_rowHeight;
443 this.panRow.Controls.Add(rowControl);
444 rowControl.Dock = DockStyle.Top;
445 row.CellClick += (a, b) => { SetSelectRow(rowControl, b); };
446 row.CheckBoxChangeEvent += (a, b) => { SetSelectRow(rowControl, b); };
447 row.SourceChanged += RowSourceChanged;
448 rowControl.BringToFront();
449 Rows.Add(row);
450
451 if (lastItem == null)
452 lastItem = rowControl;
453 }
454 }
455 if (lastItem != null && intSourceCount == m_showCount)
456 {
457 lastItem.Height = this.panRow.Height - (m_showCount - 1) * m_rowHeight;
458 }
459 }
460 }
461 finally
462 {
463 ControlHelper.FreezeControl(this.panRow, false);
464 }
465 }
466
467
468 /// <summary>
469 /// 快捷键
470 /// </summary>
471 /// <param name="msg"></param>
472 /// <param name="keyData"></param>
473 /// <returns></returns>
474 protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
475 {
476 if (keyData == Keys.Up)
477 {
478 Previous();
479 }
480 else if (keyData == Keys.Down)
481 {
482 Next();
483 }
484 else if (keyData == Keys.Home)
485 {
486 First();
487 }
488 else if (keyData == Keys.End)
489 {
490 End();
491 }
492 return base.ProcessCmdKey(ref msg, keyData);
493 }
494 /// <summary>
495 /// 选中第一个
496 /// </summary>
497 public void First()
498 {
499 if (Rows == null || Rows.Count <= 0)
500 return;
501 Control c = null;
502 c = (Rows[0] as Control);
503 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = 0 });
504 }
505 /// <summary>
506 /// 选中上一个
507 /// </summary>
508 public void Previous()
509 {
510 if (Rows == null || Rows.Count <= 0)
511 return;
512 Control c = null;
513
514 int index = Rows.IndexOf(m_selectRow);
515 if (index - 1 >= 0)
516 {
517 c = (Rows as Control);
518 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index - 1 });
519 }
520 }
521 /// <summary>
522 /// 选中下一个
523 /// </summary>
524 public void Next()
525 {
526 if (Rows == null || Rows.Count <= 0)
527 return;
528 Control c = null;
529
530 int index = Rows.IndexOf(m_selectRow);
531 if (index + 1 < Rows.Count)
532 {
533 c = (Rows as Control);
534 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index + 1 });
535 }
536 }
537 /// <summary>
538 /// 选中最后一个
539 /// </summary>
540 public void End()
541 {
542 if (Rows == null || Rows.Count <= 0)
543 return;
544 Control c = null;
545 c = (Rows as Control);
546 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = Rows.Count - 1 });
547 }
548
549 #endregion
550
551 #region 事件
552 void RowSourceChanged(object sender, DataGridViewEventArgs e)
553 {
554 if (SourceChanged != null)
555 SourceChanged(sender, e);
556 }
557 private void SetSelectRow(Control item, DataGridViewEventArgs e)
558 {
559 try
560 {
561 ControlHelper.FreezeControl(this, true);
562 if (item == null)
563 return;
564 if (item.Visible == false)
565 return;
566 this.FindForm().ActiveControl = this;
567 this.FindForm().ActiveControl = item;
568 if (m_selectRow != null)
569 {
570 if (m_selectRow == item)
571 return;
572 m_selectRow.SetSelect(false);
573 }
574 m_selectRow = item as IDataGridViewRow;
575 m_selectRow.SetSelect(true);
576 if (ItemClick != null)
577 {
578 ItemClick(item, e);
579 }
580 if (this.panRow.Controls.Count > 0)
581 {
582 if (item.Location.Y < 0)
583 {
584 this.panRow.AutoScrollPosition = new Point(0, Math.Abs(this.panRow.Controls[this.panRow.Controls.Count - 1].Location.Y) + item.Location.Y);
585 }
586 else if (item.Location.Y + m_rowHeight > this.panRow.Height)
587 {
588 this.panRow.AutoScrollPosition = new Point(0, Math.Abs(this.panRow.AutoScrollPosition.Y) + item.Location.Y - this.panRow.Height + m_rowHeight);
589 }
590 }
591 }
592 finally
593 {
594 ControlHelper.FreezeControl(this, false);
595 }
596 }
597 private void UCDataGridView_Resize(object sender, EventArgs e)
598 {
599 ResetShowCount();
600 ReloadSource();
601 }
602 #endregion
603 }
604 }</pre>
</div>
View Code</div>
<div class="cnblogs_code"><img alt="" id="code_img_closed_d3069a05-b1c0-4b18-a100-150ad698f759" class="code_img_closed lazyload" data-src="http://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif"><img alt="" id="code_img_opened_d3069a05-b1c0-4b18-a100-150ad698f759" class="code_img_opened lazyload" style="display: none" data-src="http://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif">
<div id="cnblogs_code_open_d3069a05-b1c0-4b18-a100-150ad698f759" class="cnblogs_code_hide">
<pre>1 namespace HZH_Controls.Controls
2 {
3 partial class UCDataGridView
4 {
5 /// <summary>
6 /// 必需的设计器变量。
7 /// </summary>
8 private System.ComponentModel.IContainer components = null;
9
 10 /// <summary>
 11 /// 清理所有正在使用的资源。
 12 /// </summary>
 13 /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
 14 protected override void Dispose(bool disposing)
 15 {
 16 if (disposing && (components != null))
 17 {
 18 components.Dispose();
 19 }
 20 base.Dispose(disposing);
 21 }
 22
 23 #region 组件设计器生成的代码
 24
 25 /// <summary>
 26 /// 设计器支持所需的方法 - 不要
 27 /// 使用代码编辑器修改此方法的内容。
 28 /// </summary>
 29 private void InitializeComponent()
 30 {
 31 this.panHead = new System.Windows.Forms.Panel();
 32 this.panColumns = new System.Windows.Forms.TableLayoutPanel();
 33 this.ucSplitLine_H1 = new HZH_Controls.Controls.UCSplitLine_H();
 34 this.panRow = new System.Windows.Forms.Panel();
 35 this.panPage = new System.Windows.Forms.Panel();
 36 this.panHead.SuspendLayout();
 37 this.SuspendLayout();
 38 //
 39 // panHead
 40 //
 41 this.panHead.Controls.Add(this.panColumns);
 42 this.panHead.Controls.Add(this.ucSplitLine_H1);
 43 this.panHead.Dock = System.Windows.Forms.DockStyle.Top;
 44 this.panHead.Location = new System.Drawing.Point(0, 0);
 45 this.panHead.Name = "panHead";
 46 this.panHead.Size = new System.Drawing.Size(1061, 40);
 47 this.panHead.TabIndex = 0;
 48 //
 49 // panColumns
 50 //
 51 this.panColumns.ColumnCount = 1;
 52 this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));
 53 this.panColumns.Dock = System.Windows.Forms.DockStyle.Fill;
 54 this.panColumns.Location = new System.Drawing.Point(0, 0);
 55 this.panColumns.Name = "panColumns";
 56 this.panColumns.RowCount = 1;
 57 this.panColumns.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
 58 this.panColumns.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
 59 this.panColumns.Size = new System.Drawing.Size(1061, 39);
 60 this.panColumns.TabIndex = 1;
 61 //
 62 // ucSplitLine_H1
 63 //
 64 this.ucSplitLine_H1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
 65 this.ucSplitLine_H1.Dock = System.Windows.Forms.DockStyle.Bottom;
 66 this.ucSplitLine_H1.Location = new System.Drawing.Point(0, 39);
 67 this.ucSplitLine_H1.Name = "ucSplitLine_H1";
 68 this.ucSplitLine_H1.Size = new System.Drawing.Size(1061, 1);
 69 this.ucSplitLine_H1.TabIndex = 0;
 70 this.ucSplitLine_H1.TabStop = false;
 71 //
 72 // panRow
 73 //
 74 this.panRow.AutoScroll = true;
 75 this.panRow.Dock = System.Windows.Forms.DockStyle.Fill;
 76 this.panRow.Location = new System.Drawing.Point(0, 40);
 77 this.panRow.Name = "panRow";
 78 this.panRow.Size = new System.Drawing.Size(1061, 475);
 79 this.panRow.TabIndex = 1;
 80 //
 81 // panPage
 82 //
 83 this.panPage.Dock = System.Windows.Forms.DockStyle.Bottom;
 84 this.panPage.Location = new System.Drawing.Point(0, 515);
 85 this.panPage.Name = "panPage";
 86 this.panPage.Size = new System.Drawing.Size(1061, 50);
 87 this.panPage.TabIndex = 0;
 88 this.panPage.Visible = false;
 89 //
 90 // UCDataGridView
 91 //
 92 this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
 93 this.BackColor = System.Drawing.Color.White;
 94 this.Controls.Add(this.panRow);
 95 this.Controls.Add(this.panPage);
 96 this.Controls.Add(this.panHead);
 97 this.Name = "UCDataGridView";
 98 this.Size = new System.Drawing.Size(1061, 565);
 99 this.Resize += new System.EventHandler(this.UCDataGridView_Resize);
100 this.panHead.ResumeLayout(false);
101 this.ResumeLayout(false);
102
103 }
104
105 #endregion
106
107 private System.Windows.Forms.Panel panHead;
108 private System.Windows.Forms.TableLayoutPanel panColumns;
109 private UCSplitLine_H ucSplitLine_H1;
110 private System.Windows.Forms.Panel panRow;
111 private System.Windows.Forms.Panel panPage;
112
113 }
114 }</pre>
</div>
View Code</div>
如果你仔细看，你会发现行我用了类型进行传入，当你需要更丰富的行内容的时候，可以自定义行控件，然后通过RowType属性传入
分页控件我使用了分页控件基类UCPagerControlBase，这样做的好处就是你同样可以扩展分页控件
<h1>用处及效果</h1>
<img alt="" data-src="https://img2018.cnblogs.com/blog/396919/201908/396919-20190816162518967-1649903757.png">
调用示例
<div class="cnblogs_code">
<pre> 1List<DataGridViewColumnEntity> lstCulumns = new List<DataGridViewColumnEntity>();
 2 lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "ID", HeadText = "编号", Width = 70, WidthType = SizeType.Absolute });
 3 lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Name", HeadText = "姓名", Width = 50, WidthType = SizeType.Percent });
 4 lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Age", HeadText = "年龄", Width = 50, WidthType = SizeType.Percent });
 5 lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Birthday", HeadText = "生日", Width = 50, WidthType = SizeType.Percent, Format = (a) => { return ((DateTime)a).ToString("yyyy-MM-dd"); } });
 6 lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Sex", HeadText = "性别", Width = 50, WidthType = SizeType.Percent, Format = (a) => { return ((int)a) == 0 ? "女" : "男"; } });
 7 this.ucDataGridView1.Columns = lstCulumns;
 8 this.ucDataGridView1.IsShowCheckBox = true;
 9 List<object> lstSource = new List<object>();
10 for (int i = 0; i < 200; i++)
11 {
12 TestModel model = new TestModel()
13 {
14 ID = i.ToString(),
15 Age = 3 * i,
16 Name = "姓名——" + i,
17 Birthday = DateTime.Now.AddYears(-10),
18 Sex = i % 2
19 };
20 lstSource.Add(model);
21 }
22
23 var page = new UCPagerControl2();
24 page.DataSource = lstSource;
25 this.ucDataGridView1.Page = page;
26 this.ucDataGridView1.First();</pre>
</div>
如果使用分页控件，则将数据源指定给分页控件，否则直接指定给表格控件数据源
<h1>最后的话</h1>
如果你喜欢的话，请到 https://gitee.com/kwwwvagaa/net_winform_custom_control 点个星星吧

</div>
<div id="MySignature" role="contentinfo">
<div style="display: block" id="MySignature">
作者：冰封一夏
 
出处：http://www.cnblogs.com/bfyx/
 
HZHControls官网：http://www.hzhcontrols.cn
 
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，
 且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
 
GitHub：https://github.com/kwwwvagaa/NetWinformControl
 
码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git

</div> 
来源：https://www.cnblogs.com/bfyx/p/11364737.html

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