Unexplained error in data access code :(

[Wokawidget]

I am using this small data access DLL, written in C# by one of our contractors.
I have attached this to this post.
The usage for this dll is:

Public Class DocketDA

	Private ReadOnly Property GetSQL() As String
		Get
			Dim SQL As String
			SQL = "SELECT Orders.OrderNo AS DocketNo, Orders.Status, Orders.Description, SubContractor.SubName AS ContractorName "
			SQL &= "FROM Orders "
			SQL &= "INNER JOIN SubContractor ON SubContractor.SubID = Orders.SubID "
			Return SQL
		End Get
	End Property


	Public Function FetchDockets() As DataTable
		Dim SQL As String = GetSQL
		Dim SQLAccess As New csharpdata.SQL("Server=aqu_lhcit_dbt01;Database=TestAXA;UID=TestAXAUser;Pwd=TestAXAUser")
		Dim dt As DataTable = SQLAccess.GetDataTable(SQL)


	End Function
End Class

Where csharpdata is the name of the compile C# dll, and the above code is in VB.NET

I have traced the c# code, and cannot for the life of me see where it's going wrong. The code crashes on the line oDataAdapter.Fill and the error is that an object is nothing of null.

But the code create all objects fine...I am confused

Woka