小编Mat*_*ond的帖子

我使用以下内容将a转换BitmapSource为Bitmap:

internal static Bitmap ConvertBitmapSourceToBitmap(BitmapSource bitmapSrc)
{
    int width = bitmapSrc.PixelWidth;
    int height = bitmapSrc.PixelHeight;
    int stride = width * ((bitmapSrc.Format.BitsPerPixel + 7) / 8);

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

    bitmapSrc.CopyPixels(bits, stride, 0);

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

            return new System.Drawing.Bitmap(
                width,
                height,
                stride,
                System.Drawing.Imaging.PixelFormat.Format32bppPArgb, //The problem
                ptr);
        }
    }
}

但我不知道如何得到PixelFormat它BitmapSource,所以我的图像被破坏了.

对于上下文,我使用这种技术,因为我想加载一个tiff,可能是8或16灰色或24或32位颜色,我需要PixelFormat保留.我更喜欢修复ConvertBitmapSourceToBitmap它,因为它相当方便,但也很乐意用更好的技术替换以下代码,从BitmapSource创建一个Bitmap:

Byte[] buffer = File.ReadAllBytes(filename.FullName);
using …

更新的问题更通用:

我有以下代码.当您交换线程[i] .Join()的位置时,您会得到不同的输出.

static void ThreadedWorker(int startIndex, int endIndex)
{
    Console.WriteLine("Working from results[ " + startIndex +"] to results["+endIndex+"]");
}

static void Main(string[] args)
{
    int threadCount = System.Environment.ProcessorCount;
    int calculationCount = 500; //the number of array elements we'd be iterating over if we were doing our work
    int threadDataChunkSize = calculationCount / threadCount;
    if (threadDataChunkSize < 1) threadDataChunkSize = 1; //just in case we have loads of threads

    Thread[] threads = new Thread[threadCount];
    for (int i = 0; i …