checkbox in grid

Question

hello i have one gridin that grid i have one column contains checkbox to select particular column..... i have one button outside grid ... my question is that if i click on that button all the checkbox in grid should be checked... how can i do this.... plz provide me code by example.. thanks

Amit Choudhary · Answer

hi friend First we have the .aspx markup script type =text/javascript> function SelectAll(id) { var frm = document.forms[0]; for (i=0;i if (frm.elements[i].type == checkbox ) { frm.elements[i].checked = document.getElementById(id).checked; } } } script > asp : GridView ID =GridView1 runat =server DataSourceID =SqlDataSource1 Width =400px> Columns > asp : TemplateField > AlternatingItemTemplate > asp : CheckBox ID =CheckBox1 runat =server /> AlternatingItemTemplate > ItemTemplate > asp : CheckBox ID =CheckBox1 runat =server /> ItemTemplate > HeaderTemplate > asp : CheckBox ID =cbSelectAll runat =server Text =Select All /> HeaderTemplate > HeaderStyle HorizontalAlign =Left /> ItemStyle HorizontalAlign =Left /> asp : TemplateField > Columns > asp : GridView > then we have c# code: protected void GridView1_RowDataBound( object sender System.Web.UI.WebControls.GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.Header) { //adding an attribute for onclick event on the check box in the header //and passing the ClientID of the Select All checkbox ((CheckBox)e.Row.FindControl( cbSelectAll )).Attributes.Add( onclick  javascript:SelectAll(' + ((CheckBox)e.Row.FindControl( cbSelectAll )).ClientID + ') ); and you are done. Please mark as answer if it helps....

BangaruBabu Pureti · Answer

CheckBox chk = (CheckBox)gv.HeaderRow.FindControl(chkheader); for (int i = 0; i { CheckBox chkrow = (CheckBox)gv.Rows[i].FindControl(chkbox); chkrow.Checked = true; }

Lalit M · Answer

you can check previous post here .