or

<asp:CheckBox ID="ckBoxAutoFill" runat="server" Text="Auto Fill" /><telerik:RadButton ID="btnAddNew" runat="server" OnClientClicked="addNewRecord" OnClick="btnAddNew_Click" Text="Add">function addNewRecord(sender, args) { var ckBox = document.getElementById("<%=ckBoxAutoFill.ClientID%>"); if (ckBox.checked) { //execute onclick event btnAddNew_Click } else { //don't execute onclick event and execute the code below var grid = $find("<%=radGrid1.ClientID%>"); var batchManager = grid.get_batchEditingManager(); batchManager.addNewRecord(grid.get_masterTableView()); }}