Question

I am using SqlBulkCopy. So I made a datatable and specifed it’s columns then added rows to the datatable and then try to insert it.

System.InvalidOperationException was
unhandled by user code Message=The
given value of type String from the
data source cannot be converted to
type int of the specified target

I keep getting this error though. The thing is I have 3 int columns and I have no clue which one it is.

I even put on each int column the type of of it.

 datatable.Columns.Add("Id", typeof(int));

Still seems to have problems. So where in the stack trace or int the exception will it say the actual column it dies on?

Answer 1

Check out Bruce Dunwiddie’s excellent ValidatingDataReader class. It provides really excellent information in the exception messages when you have this kind of mapping issue.