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delegate parameters don't look right

Posted on 2011-10-13
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Last Modified: 2012-06-27
Something doesn't look right with this delegate. I changed it to pass the control as a parameter, instead of having a separate method for each control. But line 12 doesn't look right. I don't see how the control gets passed to the delegate.
delegate void SetTextControlDelegate(Control control, string text);

/* Call this method to change text on a form control (TextBox or Label) */
private void SetTextControl(Control textControl, string text)
{
  // Check if this method is running on a different thread
  // than the thread that created the control.
  if (textControl.InvokeRequired)
  {
    // It's on a different thread, so use Invoke. (We call ourself through a delegate.)
    SetTextControlDelegate d = new SetTextControlDelegate(SetTextControl);
    textControl.BeginInvoke (d, new object[] { text });
  }
  else
  {
    // It's on the main UI thread, no need for Invoke
    try
    {
      textControl.Text = text;
    }
    catch (Exception e)
    {
      Log("SetTextControl: Exception updating text control: " + e.Message);
    }
  }
}

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Question by:deleyd
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jagrut_patel earned 2000 total points
ID: 36966800
Instead of

textControl.BeginInvoke (d, new object[] { text });

try this

this.BeginInvoke (d, new object[] { textControl, text });
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