C# DBConcurrencyException during update

Question

4.00/5 (1 vote)

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I have been searching for days and have attempted many, many solution without success.
I can view, create and delete rows with no problems but for some reason I am having a problem updating rows.
Any help would be great appreciated.

C#

private void cmdApproved_Click(object sender, EventArgs e)
  {
      foreach (DataGridViewRow dgr in dataGridView1.SelectedRows)
      {
          DataRow dr = workflowDataSet.tblAbm.Rows.Find(dgr.Cells[9].Value);
          if (dr != null)
          {
              dr["abmStatus"] = 5;
              dr["releasedDate"] = DateTime.Now;
               tblAbmTableAdapter.Update(workflowDataSet.tblAbm);
          }
      }
      this.tblAbmTableAdapter.GetApprovalList(this.workflowDataSet.tblAbm, Globals.gUserId);
  }

Posted 19-Feb-15 5:56am

Mechanic Brian

Updated 19-Feb-15 6:18am

Wendelius

v3

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2 solutions

Solution 2

Mika,
You were correct. I set a custom update and it worked like a charm. I feel a little silly that it was that simple but appreciate you pointing me in the right direction.

Posted 19-Feb-15 8:58am

Mechanic Brian

Comments

Wendelius 19-Feb-15 23:22pm

You're welcome. By the way, instead of adding a new solution you can leave a comment on existing solution, just like this one. By adding a comment the person who wrote the solution gets notified and knows to come back :)

Mechanic Brian 20-Feb-15 9:02am

Thank you for that information. I missed the reply button.

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Wendelius · Accepted Answer · 2015-02-19T06:22:00

From msdn

The exception that is thrown by the DataAdapter during an insert, update, or delete operation if the number of rows affected equals zero.

So you need to see what is the UPDATE statement for the adapter. It most likely contains a WHERE clause where you'll find a condition that causes zero rows to be updated during the execution. Without seeing the UPDATE statement we can only speculate that some values in the columns used in the WHERE clause have been changed.