how can crop bitmap in c#

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C#

Bitmap

i have a bitmap (534*91)
and i want crop this from for example (Width 200 to Width=300)
how can i do it??????????


Bitmap bmp= new Bitmap(paint_Control1.Width, paint_Control1.Height);
Rectangle rec = new Rectangle(0, 0, paint_Control1.Width, paint_Control1.Height);

paint_Control1.DrawToBitmap(bmp, rec);