Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 241
  • Last Modified:

Auto Increment primary key issue

Hi,
I have a sql server database, and for a primary key I use an auto incrementing integer field.  In my code I create a new row like this...

Dim rowNewRow As DataRow
rowNewRow = Me.DsTheDataSet.TheTable.NewRow
rowNewRow.Item("Field1") = "something"
Me.DsTheDataSet.TheTable.Rows.Add(rowNewRow)

That works fine, but the primary key created for the new row isn't the real key, it's just an auto increment starting from 1.  Once the data is save the primary key updates to the real one.  The thing is I want to be able to use the primary key value before saving the dataset.  Is this possible?

Thanks a lot
0
hmcnasty
Asked:
hmcnasty
1 Solution
 
ZeonFlashCommented:
I can see several possiblities, but none of which are very safe.  First, you can use IDENT_CURRENT('tablename') to get the current identity value...so IDENT_CURRENT('tablename') + IncrementValue [usually 1] would be the NEXT primary key that will be inserted.  You can use this knowledge in tandem with your row creation, but it's a very very very bad idea if someone else could be adding rows at the same time, in which case you would end up with spurious records.

Another method would be to write a stored procedure that inserts your new row and returns the PK.  After you get the PK, you can assign it to the row in the dataset and go about your business.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Tackle projects and never again get stuck behind a technical roadblock.
Join Now