How delete the grid record with confrimation

function deletepermission() {

         var add = 1;
         if (add == 0)
         {
             bootbox.alert("You have no permissions to Delete Record"); return false;
         }
         else
         {
             bootbox.confirm("Are You Sure To Delete Record ?", function (result) {
                 if (result == true)
                 { return true; }

             });

         }
     }

<telerik:GridTemplateColumn AllowFiltering="false" UniqueName="Action" HeaderText="Action" ItemStyle-HorizontalAlign="Left" HeaderStyle-HorizontalAlign="Left">
 <ItemTemplate>
 <asp:Button runat="server" ID="btnDelete" ToolTip="DeleteRecord" CommandName="DeleteButton" CommandArgument='<%# Eval("LandlordId") %>' Text="Delete" onclientclick="return deletepermission();" Height="22px"></asp:Button>
</telerik:GridTemplateColumn>