Home/ Questions/Q 105249
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-11T01:24:34+00:00

I am getting a strange exception when trying to update a DataTable after flagging

  • 0

I am getting a strange exception when trying to update a DataTable after flagging a row for deletion. It looks like it’s validating the data in the row I’m trying to delete. I was able to save the same row successfully, why won’t it let me delete it?

Using C# in VS 2008 and SQL Server CE.

The essential bits (I hope) of my code:

var listDataTable = new booksDataSet.ListDataTable(); this.tableAdapterManager1.ListTableAdapter.Fill(listDataTable); listDataTable.Rows[0].Delete(); this.tableAdapterManager1.ListTableAdapter.Update(listDataTable); booksDataSet1.List.AcceptChanges(); // exception here

The exception is: System.FormatException was unhandled Message=’@p2 : foo – Input string was not in a correct format.’ Source=’System.Data’

I’ve reduced this to a very simple table: Id (PK, int, not null) Name (nvarchar(100), not null) Notes (nvarchar(4000), null)

The data in the row I’m trying to delete (first row) is Name = ‘foo’, so it is the correct row, but why does it care what the data is before deleting the row?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. You need to do a trace on the app (try running it on your local copy of SQL Server and run the ‘Profiler’); my guess is when the SQL query is hitting your SQL Server, part of it isn’t in the correct format. I bet you’ll see the problem when you run a trace.

    • 0