我相信您正在寻找的解决方案位于 http://www.ridgesolutions.ie/index.php/2012/02/03/net-wpf-bitmapimage-file-locking/.就我而言，我试图找到一种在创建文件后删除文件的方法，但它似乎可以解决这两个问题.

I believe the solution you are looking for is at http://www.ridgesolutions.ie/index.php/2012/02/03/net-wpf-bitmapimage-file-locking/. In my case, I was trying to find a way to delete the file after it was created, but it appears to be a solution to both issues.

不释放内存:

var bitmap = new BitmapImage(new Uri(imageFilePath));

释放内存，并允许删除文件:

Frees up memory, and allows file to be deleted:

var bitmap = new BitmapImage(); 
var stream = File.OpenRead(imageFilePath);

bitmap.BeginInit();
bitmap.CacheOption = BitmapCacheOption.OnLoad;
bitmap.StreamSource = stream;
bitmap.EndInit();
stream.Close();
stream.Dispose();

也可以选择冻结 BitmapImage:

Optionally, also freeze the BitmapImage:

bitmap.Freeze();