HI Neveron Team,

I made a little change to Aligning Chart Areas(All Examples -> Layout -> Aligning Chart Areas) to make it refresh its data constantly.

The changed code is as below:

private void NewDataBtn_Click(object sender, System.EventArgs e)
  {
            if (timer != null)
                timer.Change(System.Threading.Timeout.Infinite, System.Threading.Timeout.Infinite);
            timer = new System.Threading.Timer(new System.Threading.TimerCallback(RefreshData), null, 0, 100);
           
   
  }
        private void RefreshData(object sender)
        {
            GenerateOHLCData(m_Stock, prevCloseValue, dataPointCount);
   GenerateVolumeData(m_Volume, prevVolumeValue, dataPointCount);

   m_Line.Values = m_Function.Calculate();
            nChartControl1.Refresh();
        }

After running for a while, I found the UI counn't display properly(as UI1.JPG).

can you tell me why this happens and how to prevent it?

Thank you very much.

Attachments

UI1.JPG (44 views, 71.00 KB)

In general it is not allowed to call methods of the control in the context of a different thread. The System.Threading.Timer executes the callback method on a threadpool thread, so you have to use the Invoke method. Please refer to the following MSDN topic for more information:

http://msdn.microsoft.com/en-us/library/ms171728.aspx

Alternatively, you can use a System.Windows.Forms.Timer, like in the following examples in our Winforms demo application:

    All Examples > Chart Gallery > Grid Surface > Waves

    All Examples > Chart Gallery > Area > Real Time Area

I hope this helps.

Best Regards,
Milen Metodiev