Hi,
I am trying to add nodes into a treeview control (through recursion)
from a secondary thread.  Following is the code snippet

class Test
{
   private delegate void ThreadSafeCallback();
   private System.Threading.Thread thrMIBTree;
   private System.Threading.ThreadStart startMIBTree;

  // Class constructor
  public Test()
  {
          startMIBTree = new
System.Threading.ThreadStart(BuildMIBTree);
           thrMIBTree = new System.Threading.Thread(startMIBTree);
  }

  void BuildMIBTree()
  {
              // This if condition is to allow the marhsalling, so
that the thread which
              // created the control actually adds nodes to it.
    if (tvwProperties.InvokeRequired)
    {
                    ThreadSafeCallback StdMIBTree = new
ThreadSafeCallback(BuildMIBTree);
                     tvwProperties.Invoke(StdMIBTree);
    }
    else
    {
                  objSNMPManager.CompileMibs(this.m_sMIBPath);

                   foreach (Variables snmpVar in
objSNMPManager.Variables)
                             AddNode(snmpVar.Oid);
               }
  }

  private void AddNode(string OID)
  {
           string parentOID = ParentNode(OID);
           TreeNode[] nd = tvwProperties.Nodes.Find(parentOID, true);

           if (nd.Length == 0)
               AddNode(parentOID);

           TreeNode newNode = new TreeNode();
           newNode.Name = OID;
           newNode.Text = GetDescription(OID);

           nd = tvwProperties.Nodes.Find(parentOID, true);
           nd[0].Nodes.Add(newNode);
   }

   private void toolButtonProps_Click(object sender, EventArgs e)
   {
          thrMIBTree.Start();
   }
}

What i dont understand is why call to thrMIBTree.Start() is blocking
the UI? any better method to do this?

Thanks
- Gancy