Question

I’m having such a problem: got dataset with a table(s). Say, we have already several records in a table which has a primary key (autoincrement). Basically, program works fine until I insert a new row. Even I use method AcceptChanges or Update, the new row is commited but it existing datatable object lacks the newest primary key value which I need for furhter processing. Is the only method to reload all the table from database again or there is a better way for it?

Thanks,
Ray

Answer 1

You should add ‘;select SCOPE_IDENTITY()’ to the end of your insert sql statement attached to your data adapter. That will read back the last inserted value generated by autoincrement and update your dataset.

I.e, your insert sql should resemble this:

insert into sometable(column1,column2) values(@column1,@column2); select * from sometable where primarykeycolumn=scope_identity()

Your existing dataset will then contain the primary keys when dataadaper.Update(dataset) returns.