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

start Bitmapbmp=newBitmap(pictureBox1.Width,pictureBox1.Height);

pictureBox1.DrawToBitmap(bmp,newRectangle(0,0,pictureBox1.Width,pictureBox1.Height));

bmp.Save("C:\\123.png",System.Drawing.Imaging.ImageFormat.Png);end