Hi team, im using gridview delete button with datasource markup:

source Code:
  1. <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:direct_deliveryConnectionString %>"

  2.                 SelectCommand="select pk_ddlvryDetailID,fk_grfdetailID,itemDescription,qty,uom,rate,(qty*rate) as Amount
from qddlvrydetails
where fk_ddlvryMasterID=@id" 

  3.                    DeleteCommand="delete 
from tblddlvrydetails
where pk_ddlvrydetailid=@id">

  4.                 <SelectParameters>

  5.                     <asp:QueryStringParameter DefaultValue="0" Name="id" QueryStringField="ID" />

  6.                 </SelectParameters>

  7.                 <DeleteParameters>

  8.                     <asp:ControlParameter ControlID="GridView1" Name="id" PropertyName="SelectedValue" />

  9.                 </DeleteParameters>

  10.             </asp:SqlDataSource>

I created a parameter named @ID which will received value from grid selectedvalue whenever the delete button fire up but whenever i do that the will just postback without delete the row.

Such case do i need to add code behind? Or im doing it wrong again.