I am binding a control which is inside Gridview, using SqlDataSource control as below.

<asp:ComboBox ID="ddlCompany" runat="server" Height="200" Width="240"
  DropDownWidth="310" EmptyMessage="- Select Product -" HighlightTemplatedItems="true" CausesValidation="false"
  Filter="Contains" AppendDataBoundItems="true" AllowCustomText="true" AutoPostBack="true"
  DataTextField="Title" DataValueField="Code" OnSelectedIndexChanged="ddlCompany_SelectedIndexChanged">
</asp:ComboBox>

<asp:SqlDataSource runat="server" ID="SqlDataSource1" ConnectionString="<%$ ConnectionStrings:MasterDB %>" SelectCommandType="StoredProcedure"
  ProviderName="System.Data.SqlClient" SelectCommand="[Invoice].[usp_tbl_AccountCode_DL_Test]">

     <SelectParameters>
         <asp:Parameter Name="@CompanyCode" Type="Int32" />
     </SelectParameters>

</asp:SqlDataSource>

In above SqlDataSource control, I had to pass the SelectParameter (whose value is coming from a ComboBox i.e., whatever comboBox value I selcect from ComboBox, its SelectedValue I had to pass it to the SqlDataSource SelectParameter.

I am first time using "SqlDataSource". Please let me know how to pass the SelectedValue of ComboBox into SlecteParameter of SqlDataSource control ??

I hope I made my question clear. Please reply