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1425

answers:

1

Hi,

I'm working with some nested datalist controls and cannot get the SP parameters for my nested stored procedure to work.

In debug I can see that SqlDataSource2.SelectParameters.Add("Section",oLabel.Text.ToString()); is getting the correct value from the label but when the results display I always get the results for the last parameter added?

I'm guessing I need to clear the parameters in some way each time the nested datalist is bound but if I add code to do that it results in an error that I have not specified the parameters?

My code is below, you'll see that eventually I will have 3 nested datalists inside each other - or that's the plan.

Thanks for any suggestions

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="nhscsharprepeater._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;


<%@ Import Namespace="System.Web" %>
<%@ Import Namespace="System.Web.UI" %>
<%@ Import Namespace="System.Data" %>

<script type="text/C#" runat="server">





    protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
    {

        DataList oList = (DataList)e.Item.FindControl("Datalist2");
        Label oLabel = (Label)e.Item.FindControl("lblSection");

        DataList oList2 = (DataList)oList.FindControl("Datalist3");


        SqlDataSource2.SelectParameters.Clear();        
        SqlDataSource2.SelectCommand = "report_DistinctSubSections";
        SqlDataSource2.SelectParameters.Add("Section",oLabel.Text.ToString());



        oList.DataBind();

    }



</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:productfolioConnectionString %>"
            SelectCommand="report_DistinctSection" SelectCommandType="StoredProcedure"></asp:SqlDataSource>
        <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:productfolioConnectionString %>"
             SelectCommandType="StoredProcedure">

             <SelectParameters>
                <asp:Parameter Name="Section" Type="String" />
             </SelectParameters>

             </asp:SqlDataSource>
        <asp:SqlDataSource ID="SqlDataSource3" runat="server" ConnectionString="<%$ ConnectionStrings:productfolioConnectionString %>"
            SelectCommand="report_getReports" SelectCommandType="StoredProcedure">
            <SelectParameters>
                <asp:Parameter Name="SubSection" Type="String" />
            </SelectParameters>
        </asp:SqlDataSource>
            <asp:DataList ID="DataList1" runat="server" DataSourceID="SqlDataSource1" RepeatColumns="2" RepeatDirection="Horizontal" OnItemDataBound="DataList1_ItemDataBound">
                   <ItemTemplate>

                   <asp:Label Runat="server" text='<%# DataBinder.Eval(Container.DataItem, "Section") %>' ID="lblSection">
                   </asp:Label>

                            <br />

                            <asp:datalist id="Datalist2" runat="server" DataSourceID="SqlDataSource2">        
            <ItemTemplate>

                                       <asp:Label Runat="server" text='<%# DataBinder.Eval(Container.DataItem, "SubSection") %>' ID="lblSection">
                                       </asp:Label>         

                                                <br />

                                                   <asp:datalist id="Datalist3" runat="server" DataSourceID="SqlDataSource3">         
                                    <ItemTemplate>

                                                               <!--<asp:Label Runat="server" text='<%# DataBinder.Eval(Container.DataItem, "Report") %>' ID="lblSection">
                                                               </asp:Label>-->                                                                 

                                    </ItemTemplate>
                                  </asp:datalist>                                                


            </ItemTemplate>
          </asp:datalist>



                </ItemTemplate>
           </asp:DataList> 
    </div>
    </form>
</body>
</html>
A: 

One might guess that calling Clear on SqlDataSource2.SelectParameters before calling Add might do the trick.

David Kemp
Thanks David, you'll see in the source that I do that:SqlDataSource2.SelectParameters.Clear();ThanksKieran