<asp:SqlDataSource ID="getN" runat="server"
   ...
   ...
   SelectCommand="GetNTitle" SelectCommandType="StoredProcedure"
   DeleteCommand="DeleteN" DeleteCommandType="StoredProcedure"]
</asp:SqlDataSource]
<asp:GridView ID="viewN" runat="server" 
   DataSourceID="getN"
   GridLines="None"
   ShowHeader="False" 
   AutoGenerateColumns="False" 
   DataKeyNames="ID"
   OnSelectedIndexChanged="viewN_SelectedIndexChanged"
   OnRowDeleting="viewN_DeleteN"]
   <Columns]
      <asp:TemplateField]
          <ItemTemplate]
          <span class="grayText"]<%# Eval("NDate", "{0:dd.MM.yyyy}") %] 
          <b]<asp:LinkButton runat="server" Text='<%# Eval("NTitle") %]' CssClass="linkBlack" CommandName="Select" ID="Select" /]</b]
          </td]
          <td style="width: 10px; vertical-align: top;"]
          <asp:LinkButton runat="server" Text="[x]" CommandName="Delete" CommandArgument='' ID="Delete" OnClientClick="return confirm('Вы уверены в том, что запись нужно удалить?');" /]
        </ItemTemplate]
     </asp:TemplateField]
   </Columns]
</asp:GridView]
//----------------------------/
protected void vieweN_DeleteN(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection(connectionString);
        string id = ???
        string sql = "SELECT * WHERE (ID = " + id + ")";
//----------------------------/