void ch_OnCheckBoxClicked(object sender, datagridviewCheckboxHeaderEventArgs e)
{
foreach (DataGridViewRow dgvRow in dataGridView1.Rows)
{
if (e.CheckedState)
{
dgvRow.Cells[0].Value = true;
}
else
{
dgvRow.Cells[0].Value = false;
}
}
}
// /// <summary>
///// 点击列头checkbox单击事件
///// </summary>
protected override void OnMouseClick(DataGridViewCellMouseEventArgs e)
{
Point p = new Point(e.X + _cellLocation.X, e.Y + _cellLocation.Y);
if (p.X >= checkBoxLocation.X && p.X <=
checkBoxLocation.X + checkBoxSize.Width &&
p.Y >= checkBoxLocation.Y && p.Y <=
checkBoxLocation.Y + checkBoxSize.Height)
{
_checked = !_checked;
//获取列头checkbox的选择状态
datagridviewCheckboxHeaderEventArgs ex = new datagridviewCheckboxHeaderEventArgs();
ex.CheckedState = _checked;
object sender = new object();//此处不代表选择的列头checkbox，只是作为参数传递。应该列头checkbox是绘制出来的，无法获得它的实例
if (OnCheckBoxClicked != null)
{
OnCheckBoxClicked(sender, ex);//触发单击事件
this.DataGridView.InvalidateCell(this);
}
}
base.OnMouseClick(e);
}