将BitmapSource转换为MemoryStream [英] Convert BitmapSource to MemoryStream

问题描述

如何将BitmapSource转换为MemoryStream.虽然我尝试了一些代码:

How Do I convert BitmapSource to MemoryStream. Though I tried some code:

private Stream StreamFromBitmapSource(BitmapSource writeBmp)
{
    Stream bmp;
    using (bmp = new MemoryStream())
    {                    
        BitmapEncoder enc = new BmpBitmapEncoder();
        enc.Frames.Add(BitmapFrame.Create(writeBmp));
        enc.Save(bmp);                                     
    }

   return bmp;
}

它没有给出任何错误，但是在放置调试点之后，它显示了一些异常，如下所示.

It doesn't give any error but after putting debugging point it is showing some exceptions which are listed below.

容量:'printStream.Capacity'引发了类型异常 'System.ObjectDisposedException'长度:'printStream.Length'抛出 类型'System.ObjectDisposedException'的异常位置: 'printStream.Position'引发了类型异常 'System.ObjectDisposedException'

Capacity: 'printStream.Capacity' threw an exception of type 'System.ObjectDisposedException' Length: 'printStream.Length' threw an exception of type 'System.ObjectDisposedException' Position: 'printStream.Position' threw an exception of type 'System.ObjectDisposedException'

推荐答案

using (bmp = new MemoryStream())导致bmp对象最终使用块被破坏.然后返回被破坏的bmp变量.

using (bmp = new MemoryStream()) causes bmp object is destroyed on end using block. And You return bmp variable which is destroyed.

使用以下方法删除:

private Stream StreamFromBitmapSource(BitmapSource writeBmp)
{
    Stream bmp = new MemoryStream();

    BitmapEncoder enc = new BmpBitmapEncoder();
    enc.Frames.Add(BitmapFrame.Create(writeBmp));
    enc.Save(bmp);                                             

   return bmp;
}

这篇关于将BitmapSource转换为MemoryStream的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！