checkbox in grid

Question

hello i have one grid,,,,,in 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 .