winform中怎样使DataGridView的某一列可以添加两个Button控件

今天在网上逛的时候，看到了一个童靴提的这个问题，看了帖子，发现楼主最终给出了自己的解决方案，感觉还不错，因此将帖子的内容整理了下，转出来了

解决方案的思路是这样:分别创建三个新的按钮模板列，第一个显示删除图片，第二个显示编辑图片，第三个显示添加图片.看代码
第一个按钮模板列的代码：
using System;
using System.Windows.Forms;

namespace 两列合并重绘列标题头
{
public class DataGridViewButtonColumnDel : DataGridViewColumn
{
public DataGridViewButtonColumnDel()
{
this.CellTemplate = new DataGridViewButtonCellDel();
this.HeaderText = "button";
}
}
}


using System;
using System.Windows.Forms;
using System.Drawing;
namespace 两列合并重绘列标题头
{
public class DataGridViewButtonCellDel : DataGridViewButtonCell
{
protected override void Paint(
Graphics graphics,
Rectangle clipBounds,
Rectangle cellBounds,
int rowIndex,
DataGridViewElementStates cellState,
object value,
object formattedValue,
string errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts)
{
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
Image _img = Properties.Resources.imgDelete_x16;
graphics.DrawImage(_img, cellBounds.Location.X + 5, cellBounds.Location.Y+3, _img.Width, _img.Height);
}
}
}
第二个按钮模板列的代码：

using System;
using System.Windows.Forms;

namespace 两列合并重绘列标题头
{
public class DataGridViewButtonColumnEdi : DataGridViewColumn
{
public DataGridViewButtonColumnEdi()
{
this.CellTemplate = new DataGridViewButtonCellEdi();
this.HeaderText = "button";
}
}
}

using System;
using System.Windows.Forms;
using System.Drawing;
namespace 两列合并重绘列标题头
{
public class DataGridViewButtonCellEdi : DataGridViewButtonCell
{
protected override void Paint(
Graphics graphics,
Rectangle clipBounds,
Rectangle cellBounds,
int rowIndex,
DataGridViewElementStates cellState,
object value,
object formattedValue,
string errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts)
{
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
Image _img = Properties.Resources.imgEdit_x16;
graphics.DrawImage(_img, cellBounds.Location.X + 5, cellBounds.Location.Y + 3, _img.Width, _img.Height);
}
}
}

第三个按钮模板列的代码：
using System;
using System.Windows.Forms;

namespace 两列合并重绘列标题头
{
public class DataGridViewButtonColumnAdd : DataGridViewColumn
{
public DataGridViewButtonColumnAdd()
{
this.CellTemplate = new DataGridViewButtonCellAdd();
this.HeaderText = "button";
}
}
}

using System;
using System.Windows.Forms;
using System.Drawing;
namespace 两列合并重绘列标题头
{
public class DataGridViewButtonCellAdd : DataGridViewButtonCell
{
protected override void Paint(
Graphics graphics,
Rectangle clipBounds,
Rectangle cellBounds,
int rowIndex,
DataGridViewElementStates cellState,
object value,
object formattedValue,
string errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts)
{
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
Image _img = Properties.Resources.imgAdd_x16;
graphics.DrawImage(_img, cellBounds.Location.X + 5, cellBounds.Location.Y + 3, _img.Width, _img.Height);
}
}
}

上面的代码几乎是一样的，就是红色部份载入了不同的图片。
图片是通过资源文件引入项目的。方法是：打开资源管理器，展开“Properties”节点（这个节点默认是隐藏的）。双击Resources.resx，点击"添加资源"，选择“添加现有资源”;添加三张图片:imgDelete_x16.png,imgEdit_x16,imgAdd_x16.png,

之后在form1上拖一个DataGridView1,给DataGridView1手动添加两列，分别是上面创建的DataGridViewButtonColumnDel，DataGridViewButtonCellEdi 这两个按钮模板列，ID分别为Column1,Column2;
form1的后台代码如下:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace 两列合并重绘列标题头
{
public partial class Form1 : Form
{
int top = 0;
int left = 0;
int height = 0;
int width1 = 0;
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
BindDataGridView();
HideCheckBoxCotrol();
HideCheckBoxCotrol1();
}
/// <summary>
/// 给DataGridView绑定测试数据
/// </summary>
private void BindDataGridView()
{
DataTable dt = new DataTable();
dt.Columns.Add("Name", typeof(string));
dt.Columns.Add("Age", typeof(string));

for (int i = 0; i < 5; i++)
{
DataRow dr = dt.NewRow();
dr[0] = i.ToString();
dr[1] = i.ToString();
dt.Rows.Add(dr);

}

this.dataGridView1.DataSource = dt.DefaultView;

}

/// <summary>
/// 把第一列和第二列的头部重绘一下，绘成一个表头
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{

#region 重绘datagridview表头
DataGridView dgv = (DataGridView)(sender);
if (e.RowIndex == -1 && (e.ColumnIndex == 0 || e.ColumnIndex == 1))
{
if (e.ColumnIndex == 0)
{
top = e.CellBounds.Top;
left = e.CellBounds.Left;
height = e.CellBounds.Height;
width1 = e.CellBounds.Width;
}


int width2 = this.dataGridView1.Columns[1].Width;

Rectangle rect = new Rectangle(left, top, width1 + width2, e.CellBounds.Height);
using (Brush backColorBrush = new SolidBrush(e.CellStyle.BackColor))
{
//抹去原来的cell背景
e.Graphics.FillRectangle(backColorBrush, rect);
}
using (Pen pen = new Pen(Color.White))
{
e.Graphics.DrawLine(pen, left + 1, top + 1, left + width1 + width2 - 1, top + 1);
}
using (Pen gridLinePen = new Pen(dgv.GridColor))
{
e.Graphics.DrawLine(gridLinePen, left, top, left + width1 + width2, top);
e.Graphics.DrawLine(gridLinePen, left, top + height - 1, left + width1 + width2, top + height - 1);
e.Graphics.DrawLine(gridLinePen, left, top, left, top + height);
e.Graphics.DrawLine(gridLinePen, left + width1 + width2 - 1, top, left + width1 + width2 - 1, top + height);

//计算绘制字符串的位置
string columnValue = "";
SizeF sf = e.Graphics.MeasureString(columnValue, e.CellStyle.Font);
float lstr = (width1 + width2 - sf.Width) / 2;
float rstr = (height / 2 - sf.Height);
//画出文本框

if (columnValue != "")
{
e.Graphics.DrawString(columnValue, e.CellStyle.Font,
new SolidBrush(e.CellStyle.ForeColor),
left + lstr,
top + rstr,
StringFormat.GenericDefault);
}

}
e.Handled = true;


}
#endregion
}
/// <summary>
/// 最后一行的第一列单元格中的DataGridViewButtonColumnDel按钮模板换
/// 成系统的DataGridViewButtonCellAdd
/// </summary>
private void HideCheckBoxCotrol()
{
DataGridViewButtonCellAdd dvcType1 = new DataGridViewButtonCellAdd();
dataGridView1.Rows[5].Cells["Column1"] = dvcType1;

}
/// <summary>
/// 最后一行的第二列单元格中的DataGridViewButtonColumnEdi按钮模板换
/// 成系统的DataGridViewTextBoxCell
/// </summary>
private void HideCheckBoxCotrol1()
{
DataGridViewCell dvcType = new DataGridViewTextBoxCell();
dataGridView1.Rows[5].Cells["Column2"] = dvcType;

}
}
}