Add a clearly selected CheckBox control on the DataGrid header (transfer)

From: http://blog.9cbs.net/lihonggen0/Archive/2004/08/13/74202.aspx

Add a clear-selected Checkbox control on the DataGrid header

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Very simple method, use JS implementation:

page:

< / Headertemplate>

Headertext = "Department"> Background code:

private void dgUserList_PreRender (object sender, System.EventArgs e) {foreach (DataGridItem item in dgUserList.Controls [0] .Controls) {if (item.ItemType == ListItemType.Header) {CheckBox chkAll = (CheckBox) item.FindControl ( "chkAll"); System.Text.StringBuilder strScript = new System.Text.StringBuilder ( "