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Adding Rows Through Windows Form to Table with Identity Column

Posted on 2006-06-26
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Last Modified: 2010-04-23
Hi boys and girls,

I have a windows app with a form.  I've dragged and dropped a table from my dataset onto the form.  VS 2005 kindly adds a binding navigator that allows you to add, delete and save records.  Very nice.

The problem comes when I try to add a row to the table through the form.  The primary key of the table is an auto-incrementing identity column, so I don't want the form to pass a null to the table.  Wwhen it does so, of course, I get the "column x does not accept nulls" error.

How do I tell the form not to insert a value for the identity column?  Do I need to use a different binding source for inserts vs. updates and deletions (where the primary key value is required to update the row)?

TIA!
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Question by:seadriver
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vadim63 earned 2000 total points
ID: 16986633
Shouldn't be any problems. Can you see "AutoIncrement" has "true" value in Dataset Designer?
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by:seadriver
ID: 16987120
Thanks, just needed to know where to look.

Now I'm getting errors on all the non-null columns that don't have related form controls setting values for them.  I'd like the database to set the default value, not the form, but for the heck of it, I went ahead and set the Default Value of the Status column to 'A' in the property box.  VS 2005 accepted the entry, then refused to display the form or the dataset designer, telling me that Status had an invalid default value.

How can a tool blow up on an entry it allowed you to make in the form designer???

Oh well, that's another issue.  Seems to me that this thing really isn't ready for prime time yet...

Thanks again!
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