Winform 截图

　　最近做了一些关于画图方面的东西, 分享一下, Winform 截图,  此文而屏幕截图, 只是截图片的其中一部分,

 

方法1.

        /// <summary>
        /// Crop Image
        /// </summary>
        /// <param name="image">Original image</param>
        /// <param name="targetSize"></param>
        /// <param name="x">x cod</param>
        /// <param name="y">y cod</param>
        /// <returns>After crop image</returns>
        public static Bitmap Crop(Image image, Size targetSize, int x, int y)
        {
            try
            {
                Bitmap bmp = new Bitmap(targetSize.Width, targetSize.Height);//, PixelFormat.Format24bppRgb);
                bmp.SetResolution(image.HorizontalResolution, image.VerticalResolution);

                Graphics gfx = Graphics.FromImage(bmp);
                gfx.SmoothingMode = SmoothingMode.AntiAlias;
                gfx.InterpolationMode = InterpolationMode.HighQualityBicubic;
                gfx.PixelOffsetMode = PixelOffsetMode.HighQuality;
                gfx.DrawImage(image, new Rectangle(0, 0, targetSize.Width, targetSize.Height),
                    x, y, targetSize.Width, targetSize.Height, GraphicsUnit.Pixel);

                gfx.Dispose();

                return bmp;
            }
            catch (Exception ex)
            {
                return null;
            }
        }

 

 

方法2.

 

        private static Image CropImage(Image img, Rectangle cropArea)
        {
            Bitmap bmpImage = new Bitmap(img);
            Bitmap bmpCrop = bmpImage.Clone(cropArea,
            bmpImage.PixelFormat);
            return (Image)(bmpCrop);
        }

两种方法出来的效果都一样,只不过方法1可以直接set 分辨率,用起来都比较容易.