Hi Guys

Ive recently made a simple amendment to my dataset in that i assigned a primary key field to my postcode column. In order to do this i needed to unassign a primary key from a column named b_dmref.

Since ive done this im getting the error on the following line of code.

If Me.PostTableAdapter.GetData(0).IsB_DMRefNull Then

The error states
'IsB_DMRefNull' is not a member of 'PostMap.DataSet1.PostRow'.

However when i check the dataset the column is still there. I have loads of these queries in my code its only this ref that causes the issue. Any ideas why it would lose the ability to check the is""null value?