Web Forms :: Ddl Won't Bind To Static Listitem?
Apr 27, 2010
In vsw2005/ASP.Net 2 i have a formview used for project management; i recently added a new set of dates and a dropdownlist for the contact name. It is essentially a duplicate of another set of dates and contact. Both dropdownlists use the same sqldatasource, but the new one is throwing an error when the form changes to edit mode:
"'ddlInstall2Engineer' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value"
The error occurs even though I have a static listitem with appenddatabounditems set to true. Here is the markup for both ddl and sqldatasource (as you can see, other than id and name of field being bound to, they are identical):
<asp:DropDownList ID="ddlInstallEngineer" runat="server" AppendDataBoundItems="true"
DataSourceID="sdsInstallEngineer" DataTextField="Name" DataValueField="ID"
SelectedValue='<%# Bind("InstallEngineer_ID") %>' Width="150px">
<asp:ListItem Text="TBD" Value="0"></asp:ListItem>
[Code]....
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[Code]....
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