Error Message: Must declare variable @ID

I'm having trouble with a datalist. The default view is the Item Template which has an Edit button. When I click the Edit button, I run the following code (for the EditCommand of the Datalist):

DataList1.EditItemIndex = e.Item.ItemIndex

DataBind()

It errors out with the message "Must declare variable @.ID".

I've used this process on other pages without problem.

The primary key for the recordsource that populates this datalist is a field named "AutoID". There is another field named ID that ties these records to a master table. The list of rows returned in the datalist is based off the ID field matching a value in a dropdown list on the page (outside of the datalist). So my SQLdatasource has a parameter to match the ID field to @.ID. For some reason, it's not finding it and I cannot determine why. I haven't had this issue on other pages.

Here's my markup of the SQLDataSource and the Datalist/Edit Template:

<asp:SqlDataSourceID="SqlDataSource4"runat="server"ConnectionString="<%$ ConnectionStrings:SMARTConnectionString%>"

DeleteCommand="DELETE FROM [tblSalesSupport] WHERE [NBID] = @.NBID"

InsertCommand="INSERT INTO [tblSalesSupport] ([ID], [NBNC], [NBEC], [Description], [Estimate], [CompanyID], [CompanyName], [ProjectNumber]) VALUES (@.ID, @.NBNC, @.NBEC, @.Description, @.Estimate, @.CompanyID, @.CompanyName, @.ProjectNumber)"

SelectCommand="SELECT * FROM [tblSalesSupport] WHERE ([ID] = @.ID)"

UpdateCommand="UPDATE [tblSalesSupport] SET [ID] = @.ID, [NBNC] = @.NBNC, [NBEC] = @.NBEC, [Description] = @.Description, [Estimate] = @.Estimate, [CompanyID] = @.CompanyID, [CompanyName] = @.CompanyName, [ProjectNumber] = @.ProjectNumber WHERE [NBID] = @.NBID">

<DeleteParameters>

<asp:ParameterName="NBID"Type="Int32"/>

</DeleteParameters>

<UpdateParameters>

<asp:ParameterName="ID"Type="Int32"/>

<asp:ParameterName="NBNC"Type="Boolean"/>

<asp:ParameterName="NBEC"Type="Boolean"/>

<asp:ParameterName="Description"Type="String"/>

<asp:ParameterName="Estimate"Type="Decimal"/>

<asp:ParameterName="CompanyID"Type="Int32"/>

<asp:ParameterName="CompanyName"Type="String"/>

<asp:ParameterName="ProjectNumber"Type="String"/>

<asp:ParameterName="NBID"Type="Int32"/>

</UpdateParameters>

<SelectParameters>

<asp:ControlParameterControlID="ddlFind"Name="ID"PropertyName="SelectedValue"Type="Int32"/>

</SelectParameters>

<InsertParameters>

<asp:ParameterName="ID"Type="Int32"/>

<asp:ParameterName="NBNC"Type="Boolean"/>

<asp:ParameterName="NBEC"Type="Boolean"/>

<asp:ParameterName="Description"Type="String"/>

<asp:ParameterName="Estimate"Type="Decimal"/>

<asp:ParameterName="CompanyID"Type="Int32"/>

<asp:ParameterName="CompanyName"Type="String"/>

<asp:ParameterName="ProjectNumber"Type="String"/>

</InsertParameters>

</asp:SqlDataSource>

<asp:DataListCssClass="MainFormDisplay"ID="DataList1"runat="server"DataKeyField="NBID"DataSourceID="SqlDataSource1"width="100%">

<HeaderTemplate>….</HeaderTemplate>

<ItemTemplate>….</ItemTemplate>

<EditItemTemplate>

<tableborder="0" style="width: 100%">

<trclass="MainFormDisplay" valign="top">

<tdcolspan="8">

<asp:TextBoxID="txtNBID"runat="server"Text='<%# Eval("NBID")%>'Visible="true"></asp:TextBox>

<asp:TextBoxID="txtID"runat="server"Text='<%# Bind("ID")%>'Visible="True"></asp:TextBox></td>

</tr>

<trclass="MainFormDisplay">

<tdvalign="top"style="width: 100px"><asp:CheckboxID="chkNBNC"runat="server"Checked='<%# Bind("NBNC")%>'/></td>

<tdstyle="width: 100"><asp:CheckBoxID="chkNBEC"runat="server"Checked='<%# Bind("NBEC")%>'Width="100px"/></td>

<tdstyle="width: 100px"><asp:TextBoxID="txtCompanyName"runat="server"Text='<%# Bind("CompanyName")%>'Width="100px"></asp:TextBox></td>

<tdstyle="width: 100px"><asp:TextBoxID="txtProjectNumber"runat="server"Text='<%# Bind("ProjectNumber")%>'Width="100px"></asp:TextBox></td>

<tdstyle="width: 100px"><asp:TextBoxID="txtDescription"runat="server"Text='<%# Bind("Description")%>'Width="100px"></asp:TextBox></td>

<tdstyle="width: 100px"><asp:TextBoxID="txtEstimate"runat="server"Text='<%# Bind("Estimate","{0:N2}")%>'Width="100px"></asp:TextBox></td>

<tdstyle="width: 55px"><asp:CheckBoxID="ckDeleteFlag"runat="server"/></td>

<tdstyle="width: 100px"><asp:ButtonID="ItemSaveButton"runat="server"CommandName="Update"Text="Save"/>

<asp:ButtonID="ItemCancelButton"runat="server"CommandName="Cancel"Text="Cancel"/></td>

</tr>

</table>

</EditItemTemplate>

</asp:DataList><br/>

You need to replace

<asp:ParameterName="ID"Type="Int32"/>

in your UpdateParameters with

<asp:ControlParameterControlID="ddlFind"Name="ID"PropertyName="SelectedValue"Type="Int32"/>

|||

Thank you very much for your reply. I have tried this though and I still get the same error.

I believe it's because it's not running the UpdateCommand at all at this point. When I click the Edit button, it simply flips it from ItemTemplate to EditTemplate, passing the index of the row that the user click on so that while in EditTemplate mode, the user can make changes to data, click save and update. The code that runs when the Edit button is clicked is the following: (This

Protected Sub DataList1_EditCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataListCommandEventArgs) Handles DataList1.EditCommand
DataList1.EditItemIndex = e.Item.ItemIndex
DataBind()
End Sub