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System.ArgumentNullException: 'column' argument cannot be null

The following error occurs when I want to make a relation between two tables : "System.ArgumentNullException: 'column' argument cannot be null" .

The code where appears the exception:
ds.Relations.Add("ProjectToTestcase", _
ds.Tables("projects").Columns("projectID"), _
ds.Tables("testcasesnames").Columns("projectID"))


The name of the columns from the code is the same with the names of the columns from DB.


Thanks for help!
Florin
May 15 '07 #1
1 10523
kenobewan
4,871 Expert 4TB
Have you tried using the column numbers instead? Also check the tables by displaying them first. HTH.
May 15 '07 #2

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