图片类型转换

[longjun1627]

在WPF中想将其中的图片换到WINFORM中去用,老是出现下面的错误,各位碰到过吗?说点方法呀.

无法从System.Windows.Media.ImageBrush转换为System.Drawing.Image

无法从System.Windows.Media.Imaging.RenderTargetBitmap转换为System.Drawing.Image

[palmax]

用二进制流做中转

[longjun1627]

楼上的能说的详细吗?给点源代码呀
多谢了

[zlb789]

帮你顶

[longjun1627]

无语了,没人关注,自己解决了,帖出来共享下吧

public System.Drawing.Bitmap GetBitmap(BitmapSource image)
        { 
                System.Windows.Media.Imaging.BitmapSource bitmapSource = image as BitmapSource;
 
                double newWidthRatio = image.Width / (double)bitmapSource.PixelWidth;
                double newHeightRatio = ((image.Width * bitmapSource.PixelHeight) / (double)bitmapSource.PixelWidth) / (double)bitmapSource.PixelHeight;

                System.Windows.Media.Imaging.BitmapSource transformedBitmapSource = new System.Windows.Media.Imaging.TransformedBitmap(
                    bitmapSource,
                    new System.Windows.Media.ScaleTransform(newWidthRatio, newHeightRatio));

                int width = transformedBitmapSource.PixelWidth;
                int height = transformedBitmapSource.PixelHeight;
                int stride = width * ((transformedBitmapSource.Format.BitsPerPixel + 7) / 8);

                byte[] bits = new byte[height * stride];

                transformedBitmapSource.CopyPixels(bits, stride, 0);

                unsafe
                {
                    fixed (byte* pBits = bits)
                    {
                        IntPtr ptr = new IntPtr(pBits);

                        System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(
                            width,
                            height,
                            stride,
                            System.Drawing.Imaging.PixelFormat.Format32bppPArgb,
                            ptr);

                        return bitmap;
                    }
                }
            }

[longjun1627]

WPF问题,怎么这么少人关注呀?

[nvshenxp]

楼主，请教你个问题，如何把Image转化成Bitmap。请帮下忙，谢谢！