C# DataGridView 添加Button -转
也不知道是否该应用这个控件，不过也想不出该用其他什么控件，关键是俺比较菜没什么经验。
要求是这样的，用户一次添加一个任务，这个任务有三个选项，其中两个选项是用户动态输入的名称（就象图中bb和dd两列），另一个选项则是一堆数据（就象qq那列），我现在要把每个任务罗列出来，不能用treeview，不能用tabcontrol，不能用xml，最好象个表格一样清晰明朗（疯了！）每个任务对应两个按钮，一个是Run，为了跑任务，一个是Remove，为了移除任务。
当然最开始选择DataGridView就是为了满足那个“象表格一样清晰明朗”的奇怪需求，一行对应一个任务，其次貌似DataGridView控件在.net 2.0中加入了新的特征如DataGridViewButtonColumn啊，DataGridViewComboBoxColumn之类的东东。研究了一天才发现这两个东东根本派不上用场，首先DataGridViewButtonColumn中的Button跟真的Button根本没得比，既不能添加Button的Text也不好添加Click事件（应该是有方法的但还是很别扭而且也没研究）；其次是DataGridViewComboBoxColumn，不仅外观上不能和真正的ComboBox相提并论，而且当你选择了其中的任一item，DataGridView就会新增一行，这跟我们的需求是完全不符合的，毕竟一个选项是不能代表一个任务的。
从网上查了很多资料，呵呵，看到一篇说可以画个控件上去，觉得很有意思。其实我就是这么做的。
（1）首先初始化DataGridView控件。
private void Form1_Load(object sender, EventArgs e)
{
DataGridViewCellStyle columnHeaderStyle = new DataGridViewCellStyle();
columnHeaderStyle.BackColor = Color.Beige;
columnHeaderStyle.Font = new Font("Verdana", 10, FontStyle.Bold);
dataGridView1.ColumnHeadersDefaultCellStyle = columnHeaderStyle;
this.dataGridView1.Columns.Add("1", "bb");
this.dataGridView1.Columns.Add("2", "qq");
this.dataGridView1.Columns.Add("3", "dd");
this.dataGridView1.Columns.Add("4", "aa");
}（2）单击按钮添加一行，包括单元格和单元格的值，看似内嵌在单元格中的按钮和下拉列表
private void button4_Click(object sender, EventArgs e)
{
DataGridViewRow dr = new DataGridViewRow();
foreach (DataGridViewColumn c in this.dataGridView1.Columns)
{
dr.Cells.Add(c.CellTemplate.Clone() as DataGridViewCell); //给行添加单元格
}
dr.Cells[0].Value = "1111";
dr.Cells[2].Value = "3333";
this.dataGridView1.Rows.Add(dr);
int index = this.dataGridView1.Rows.Count - 2;
ComboBox com = new ComboBox();
com.Name = "Containers" + index.ToString(); ;
com.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
com.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
com.Items.AddRange(new object[] {
"1",
"2",
"3",
"4"});
com.SelectedIndex = 0;
this.dataGridView1.Controls.Add(com);
this.dataGridView1.Columns[1].Width = com.Width;
com.Location = new System.Drawing.Point(((this.dataGridView1.GetCellDisplayRectangle(1, index, true).Right) - (com.Width)), this.dataGridView1.GetCellDisplayRectangle(1, index, true).Y);
Button btn1 = new Button();
btn1.Name = "btnRun" + index.ToString(); ;
btn1.Text = "Run";
btn1.Click+=new EventHandler(btn1_Click);
Button btn2 = new Button();
btn2.Name = "btnRemove"+index.ToString();
btn2.Text = "Remove";
btn2.Click+=new EventHandler(btn2_Click);
this.dataGridView1.Controls.Add(btn1);
this.dataGridView1.Controls.Add(btn2);
this.dataGridView1.Columns[3].Width = btn1.Width + btn2.Width + 6;
btn1.Location = new System.Drawing.Point(((this.dataGridView1.GetCellDisplayRectangle(3, index, true).Left)), this.dataGridView1.GetCellDisplayRectangle(3, index, true).Y);
btn2.Location = new System.Drawing.Point(((this.dataGridView1.GetCellDisplayRectangle(3, index, true).Right-1) - (btn2.Width)), this.dataGridView1.GetCellDisplayRectangle(3, index, true).Y);
}
（3）为（2）中生成的Run按钮和Remove按钮添加单击事件处理程序
public void btn1_Click(object sender, EventArgs e)
{
this.richTextBox1.Text = "";
Button btn = (Button)(sender);
//这个btn的name是btnRun打头的
string suffix = btn.Name.ToString().Substring(6); //后边那个号，相当于index的string
Control c = findControlByName(suffix);
if (c != null)
{
ComboBox com = (ComboBox)(c);
//Control ctl1 = this.dataGridView1.Controls["Containers" + i.ToString()];
//ComboBox com = (ComboBox)ctl1; 其实这样写更简单点
for (int i = 0; i < com.Items.Count; i++)
{
this.richTextBox1.Text += com.Items[i].ToString() + "\n";
}
}
}
public void btn2_Click(object sender, EventArgs e)
{
int RowCount = this.dataGridView1.Rows.Count;
Button btn = (Button)(sender);
//这个btn的name是btnRemove打头的
string suffix = btn.Name.ToString().Substring(9); //后边那个号，相当于index的string
this.dataGridView1.Controls.RemoveByKey(btn.Name);
this.dataGridView1.Controls.RemoveByKey("btnRun" + suffix);
this.dataGridView1.Controls.RemoveByKey("Containers" + suffix);
int index = Convert.ToInt32(suffix);
this.dataGridView1.Rows.RemoveAt(index);
if (index < RowCount - 2)
{
for (int i = index + 1; i < RowCount - 1; i++)
{
Control ctl1 = this.dataGridView1.Controls["Containers" + i.ToString()];
Control ctl2 = this.dataGridView1.Controls["btnRun" + i.ToString()];
Control ctl3 = this.dataGridView1.Controls["btnRemove" + i.ToString()];
ComboBox com = (ComboBox)ctl1;
Button btnRun = (Button)ctl2;
Button btnRemove = (Button)ctl3;
//上移一格，单元格Height位4，Button的Height为23
com.Location = new System.Drawing.Point(com.Location.X, com.Location.Y - 23);
btnRun.Location = new System.Drawing.Point(btnRun.Location.X, btnRun.Location.Y - 23);
btnRemove.Location = new System.Drawing.Point(btnRemove.Location.X, btnRemove.Location.Y - 23);
//改名字的后缀
int j=i-1;
com.Name = "Containers" + j.ToString();
btnRun.Name = "btnRun" + j.ToString();
btnRemove.Name = "btnRemove" + j.ToString();
}
}
}
（4）btn1_Click处理中用到的函数findControlByName()
public Control findControlByName(string suffix)
{
foreach (System.Windows.Forms.Control c in this.dataGridView1.Controls)
{
if (c.Name == "Containers" + suffix)
return c;
}
return null;
}