Implementation method of GDI double buffering in .net WINFORM_Practical tips

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Sometimes when performing continuous GDI+ operations in a form, flashing conditions will occur. In addition to modifying the parameters of the form, The problem of refreshing itself should be solved. This may be the reason for double buffering.

Method 1:

Use GDI to draw on the bitmap, and then regenerate the bitmap

Bitmap bt = new Bitmap(510, 510);
Graphics g = Graphics.FromImage(bt);

g.DrawEllipse(Pens.Red, 100, 100, new Random().Next(1, 60), 50);
g.Dispose();
gb.DrawImage(bt,0,0);
gb.Dispose();

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