Read/Write from another Thread

[to_sam]

I have to implement a trace window in my application. So I have a List (System.Collections.List<>) which serves as a buffer and a grid control which serves as trace output. As items are being added to the buffer list, I want to update my grid with the newly arrived data. So I thought of creating a thread that polls the list. This is the method to add elements:

        List<TraceRow> _detectedResults;
        public void AddToList(TraceRow row)
        {
            lock (_detectedResults)
            {
                _detectedResults.Add(row);
            }
        }

The thread:

            Thread readFromListThread = new Thread(ReadDataFromList);
            readFromListThread.Start();

and the polling:

static void ReadDataFromList()
{
        while(true)
        {
                  lock(_detectedResults)
                  {
                        foreach (TraceRow traceRow in _detectedResults)
                        {
                              FillGridControl(traceRow);  
                        }
                   }
         }
}

The problem is, this is very slow and eats too much of the resources. Also I have a feeling that there is another way to do this...any suggestions?