BitmapImage sourceStream is null in WPF

Question

I'm using the following function to load a bitmap image

private BitmapImage fileNameBitMap(string filePath)
{
    if (!string.IsNullOrEmpty(filePath) && File.Exists(filePath))
    {
        try
        {
            BitmapImage bitmap = new BitmapImage();
            bitmap.BeginInit();
            bitmap.CacheOption = BitmapCacheOption.OnLoad;


            bitmap.DecodePixelWidth = 200;
            bitmap.UriSource = new Uri(filePath);
            bitmap.CreateOptions = BitmapCreateOptions.IgnoreColorProfile;

            bitmap.EndInit();
            image = bitmap;
            return bitmap;
        }
        catch
        {
            return null;
        }
    }
    return null;
}

When I debug the bitmap.SourceStream I find it equal to null, also I find a FormatNotSupportedException is thrown. I need to store the BitmapImage in a stream in a process of converting it to a byte[].

Answer 1

您应该简单地将图像文件的内容读入byte[] ：

var bytes = File.ReadAllBytes(filePath);