Vb.net datareader already open error when not used before?

Try disposing of the DataReader after you are done with it. Like this: u.Close() you = Nothing so your code should look like Sub validate_session() .... 'your code here Dim you As SqlDataReader = objCmdCheck.ExecuteReader() If u. HasRows = True Then 'Your code here Else 'Your other code goes here End If u.

Close ' This is where you should pay attention you = Nothing ... 'rest of your code here End Sub.

Solved this. Had an incorrect variable name in the second set of sql related commands – YsoL8 Jun 22 at 13:02.

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