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I have this CAML:
query.Query = @"<Where><Eq><FieldRef Name='MessageID' /><Value Type='Text'></Value></Eq></Where>";
This checks if the value of MessageID = string.empty()
What I would like to check for is null…. not empty string…
Is this possible with CAML?
CAML has the IsNull operator,so the query would be: