System.Drawing 错误从字节数据保存图像

Question

在 UWP 应用程序中将字节数据转换为图像时出错

试图从数据中获取流并将其转换为图像但错误！

错误是：

此平台不支持system.drawing

 videoParser.Initialize(delegate (byte[] data)
 {
       using (MemoryStream mStream = new MemoryStream(data))
       {
           System.Drawing.Image img = System.Drawing.Image.FromStream(mStream);
           img.Save(@"D:/img.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
       }
       return DJISDKManager.Instance.VideoFeeder.ParseAssitantDecodingInfo(0, data);
 });

我想把图片保存为jpeg格式

Answer 1

您将需要使用 IFormFile

  private string SaveImage(Guid AdID, IFormFile Photo)
    {
        if (Photo != null)
        {
            string uploadFolder = Path.Combine(hostingEnvironment.WebRootPath, "AdsImages");
            string UniqueFileName = AdID.ToString() + "_" + Photo.FileName;
            string FilePath = Path.Combine(uploadFolder, UniqueFileName);
            Photo.CopyTo(new FileStream(FilePath, FileMode.Create));
            return UniqueFileName;
        }
        else
        {
            return null;
        }
    }

Answer 2

从@Amy 共享的链接看来，System.Drawing 似乎不适用于通用 Windows 应用程序。如果你只想从数据中保存图像，你可以先创建一个文件，然后在其中写入字节。

StorageFolder folder = await StorageFolder.GetFolderFromPathAsync(@"D:\");
StorageFile file = await folder.CreateFileAsync("img.jpg", CreationCollisionOption.ReplaceExisting);
await Windows.Storage.FileIO.WriteBytesAsync(file, data);