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c# - How to make drawLine smoother?

I use the following code to draw line:

Graphics g = this.CreateGraphics();
Pen p = new Pen(Color.Black,3);
g.DrawLine(p,...);
// ...

Why the straight line is zigzag kind of, not straight and smooth at all. How could I make it straight and smoother?

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You need to enable anti-aliasing. Set Graphics.SmoothingMode to AntiAlias as described here: http://msdn.microsoft.com/en-us/library/system.drawing.graphics.smoothingmode.aspx


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