DataTable internal index is corrupted

Question

I am working with a .NET WinForms app in C#, running against the 3.5 .NET framework. In this app, I am setting the .Expression member of a DataColumn in a

Answer 1

Same prob over here, and tried a different approach. I'm not using the datatable for any screen related stuff (e.g. binding); I'm just creating DataRow objects (in multiple threads) and adding them to the table.

I've tried using lock(), and also tried centralizing the addition of the rows into a singleton, thinking this would help. It didn't. For reference, here's the singleton I used. Maybe someone else will be able to build on this and figure something out?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;

namespace EntityToDataSet
{
   public class RowAdder
   {
      #region Data
      private readonly object mLockObject = new object();
      private static RowAdder mInstance;

      public static RowAdder Instance
      {
         get
         {
            if (mInstance == null)
            {
               mInstance = new RowAdder();
            }
            return mInstance;
         }
      }

      object mSync;
      #endregion

      #region Constructor
      private RowAdder()
      {
      }
      #endregion

      public void Add(DataTable table, DataRow row)
      {
         lock (mLockObject)
         {
            table.Rows.Add(row);
         }
      }
   }
}