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linq NOT IN using datatables / AsEnumerable

swgdesign
swgdesign asked
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Last Modified: 2012-05-12
I am not using a datacontext and so I am using datatables.AsEnumerable() to use LINQ as a subquery tool.

I have 2 datatables defined as follows;

 
Dim dtObjectTypes As DataTable = IMCSelect.getObjectTypes(-1, Application("logUsers"), 1).Tables(0)

Dim dtPermissions As DataTable = IMCSelect.getPermissions(iUserID, -1, Application("logUsers")).Tables(0)

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I have started to write a LINQ query to get any items from dtObjectTypes that DO NOT appear in dtPermissions, but VS2010 is telling me the following error;

"o hides a variable in an enclosing block...etc"

 
Dim query = From o In dtObjectTypes.AsEnumerable() Where Not o.Field(Of Integer)("ID") = (From p In dtPermissions.AsEnumerable() Select p.Field(Of Integer)("TypeID") Select o)

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