internal void AddFullSelect()
{
if (this.dtGrdVwMdt.Rows.Count < 1)
{
return;
}
System.Windows.Forms.CheckBox ckBox = new System.Windows.Forms.CheckBox();
ckBox.Text = "全选";
ckBox.Checked = false;
System.Drawing.Rectangle rect =
this.dtGrdVwMdt.GetCellDisplayRectangle(0, -1, true);
ckBox.Size = new System.Drawing.Size(this.dtGrdVwMdt.Columns[0].Width, 25);
ckBox.Location = rect.Location;
ckBox.CheckedChanged += new EventHandler(ckBox_CheckedChanged);
this.dtGrdVwMdt.Controls.Add(ckBox);
}
internal void ckBox_CheckedChanged(object sender, EventArgs e)
{
for (int i = 0; i < this.dtGrdVwMdt.Rows.Count; i++)
{
this.dtGrdVwMdt.Rows[i].Cells[0].Value = http://www.mamicode.com/((System.Windows.Forms.CheckBox)sender).Checked;
}
this.dtGrdVwMdt.EndEdit();
}

///判断CheckBox是否被选中

1. for (int i = 0; i < dataGridView1.Rows.Count; i++)  
2. {  
3.     if ((bool)dataGridView1.Rows[i].Cells[0].EditedFormattedValue=http://www.mamicode.com/=true)  
4.       {  
5.         //TODO  
6.       }  
7. }  

C# DataGridView 全选 反选