/// <summary>
/// ay 2018-6-28 09:51:49
/// 支持jpg jpeg png gif bmp
/// </summary>
/// <param name="by">图片文件二进制</param>
/// <param name="fileName">文件名，要被存储到的地方 绝对路径</param>
public static void SaveBitmapImageIntoFile(byte[] by, string fileName)
{
BitmapImage bitmapImage = null;
bitmapImage = ImageResources.ByteArrayToBitmapImage(by, null, null);
BitmapEncoder encoder = null;
int index = fileName.LastIndexOf('.');
string extion = fileName.Substring(
index + 1, fileName.Length - index - 1);
extion = extion.ToLower();
switch (extion)
{
case "jpg":
case "jpeg":
encoder = new JpegBitmapEncoder();
break;
case "png":
encoder = new PngBitmapEncoder();
break;
case "gif":
encoder = new GifBitmapEncoder();
break;
case "bmp":
encoder = new BmpBitmapEncoder();
break;
}
encoder.Frames.Add(BitmapFrame.Create(bitmapImage));
using (var fileStream = new System.IO.FileStream(fileName, System.IO.FileMode.Create))
{
encoder.Save(fileStream);
}
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return(ImageResources.ByteArrayToBitmapImage((byte[])value, DecodePixelWidth, DecodePixelHeight));
}