void chkheadercell_OnCheckBoxClicked(object sender, DataGridViewCheckboxHeaderEventArgs e)
{
if (OnCheckedAllClick != null)
OnCheckedAllClick(sender, e);
}
/// <summary>
/// 点击列头checkbox单击事件
/// </summary>
protected override void OnMouseClick(DataGridViewCellMouseEventArgs e)
{
Point point = new Point(e.X + cellLocation.X, e.Y + cellLocation.Y);
if (point.X >= checkBoxLocation.X && point.X <= checkBoxLocation.X + checkBoxSize.Width
&& point.Y >= checkBoxLocation.Y && point.Y <= checkBoxLocation.Y + checkBoxSize.Height)
{
isChecked = !isChecked;
//获取列头checkbox的选择状态
DataGridViewCheckboxHeaderEventArgs args = new DataGridViewCheckboxHeaderEventArgs();
args.CheckedState = isChecked;
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, args);//触发单击事件
try
{
if (this != null && this.DataGridView != null)
{
this.DataGridView.InvalidateCell(this); //列头checkbox无效，不能是Datagridview列无效
DataGridViewCell currentCell = this.DataGridView.CurrentCell;
this.DataGridView.CurrentCell = null;
if (currentCell != null)
this.DataGridView.CurrentCell = currentCell;
}
}
catch
{
}
}
}
base.OnMouseClick(e);
}
/// <summary>
/// 单击事件
/// </summary>
private void ch_OnCheckBoxClicked(object sender, DataGridViewCheckboxHeaderEventArgs e)
{
foreach (DataGridViewRow row in BindDataGridView.Rows)
{
row.Cells[CheckAllColumnIndex].Value = e.CheckedState;
}
if (OnCheckBoxClicked != null)
OnCheckBoxClicked(sender, e);
}
