C#保存PictureBox或Bitmap图片为bmp|png|gif|jpg格式

start

Bitmap bmp  =   new  Bitmap(pictureBox1.Width, pictureBox1.Height);
pictureBox1.DrawToBitmap(bmp,  new  Rectangle( 0 ,  0 , pictureBox1.Width, pictureBox1.Height));
bmp.Save( " C:\\123.png " , System.Drawing.Imaging.ImageFormat.Png);

end

转载于:https://www.cnblogs.com/greatverve/archive/2011/04/10/save-bitmap.html