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Hi,

Is there any training video or webcast teaches how to use VS 2010 profiler to find the an asp.net application's memory and performance issues?

Thank you,

Hi:

I have read the past posts related to this issue but did not have a good grasp on it.

We have a PictureBox on a Form. The pictureBox.image is kept updating with diffrent images from a camera. This gives the effect of a video stream. Now, I put a transparent control derived from user control on top of the PicureBox. The control is configured to be transparent by setting the ExStyle to WS_EX_TRANSPARENT and  Override the OnBackgroudPaint().

I call invalidate() on the transparent control everytime a picture is updated in the PictureBox. The control will draw a ecllipse. However, I cannot seem to get rid of the flickering. Have someone encountered similar issue?

I guess that there is a delay between the Picture Box gets updated and the transparent control gets udpated, which causes the flickering?????

For certain reason, i really want to do the drawing on the transparent control instead of drawing to the new image in the PictureUpater,which can get rid of the flickering.

The transparent Customer Control: Overlay

public partial class Overlay : UserControl
    {
        Bitmap bitmap = null;
        Rectangle rect = new Rectangle(0, 0, 30, 30);