Nested Master Detail List Problem

[ultraweaver]

Hi,

I have a datalist and a gridview nested in the item template and trying
to bind the gridview to the datalist. I am getting teh error...

System.NullReferenceException: Object reference not set to an instance
of an object.

I am uncertain as to why. I have data. I am following this quick start
file (but with my own data).

http://dotnetjunkies.com/QuickStartv...etailsList.src

Here is my sub...

Protected Sub DataList1_ItemDataBound(ByVal sender As Object, ByVal e
As System.Web.UI.WebControls.DataListItemEventArgs)
Dim s As SqlDataSource = e.Item.FindControl("SqlDataSource2")
s.SelectParameters("InvoiceID").DefaultValue =
e.Item.DataItem("InvoiceID")
End Sub

The error happens on the line
"s.SelectParameters("InvoiceID").DefaultValue =
e.Item.DataItem("InvoiceID")".

Any ideas?

[ultraweaver]

Got it... I ditched the quick start method for the method posted
here...

http://groups.google.com/group/micro...16e6a9ff40d36b