ContextSwitchDeadlock was detected

Question

What can I do not to get this error? I can click continue, but I want this to run without intervention.
Here is distilled code where this happens:

OleDbConnection con = new OleDbConnection(cons);

OleDbCommand acmd = con.CreateCommand();

con.Open();

foreach (string tab in Tabs)
{

  TextFileReadsAndStringManipulation();

  acmd.CommandText = qry;
  OleDbDataReader rdr = acmd.ExecuteReader(); 

  while (rdr.Read())
  {
    for (int i = 0; i < flds.Length; i++)
    {
      string s = rdr.GetValue(i).ToString().Replace("&", "&amp;");
      s = s.Replace("<", "&lt;");
      flds[i] = s.Replace(">", "&gt;");
    }
    string arow = String.Format(row, flds);
    wks = wks.Replace(Here, arow);
  }
  rdr.Close();
}

Answer 1

It means your interface is busy for over a minute or something like that. What you should do is put your long calculations into a separate thread, like a backgroundworker. You could also just turn off the error:

Debug -> Exceptions -> somewhere in there, i don't remember where

Answer 2

Thanks,

I found a similar question posted for vb, so
I added Application.DoEvents() to be called about every 20th pass through the loop, and that took care of it.

Jon