c# – 在Azure功能应用程序blobtrigger中设置blob的内容类型

我上传的图像必须更正内容类型“image / jpeg”,但是当我使用下面的代码创建它们的新版本时,它变成“application / octet-stream”.

我在这里失踪了什么？

using ImageResizer;
using ImageResizer.ExtensionMethods;

public static void Run(Stream myBlob,string blobname,string blobextension,Stream outputBlob,TraceWriter log)
{
    log.Info($"C# Blob trigger function Processed blobn Name:{blobname} n Size: {myBlob.Length} Bytes");

    var instructions = new Instructions
    {
        Width = 570,Mode = FitMode.Crop,Scale = ScaleMode.Both,};
    ImageBuilder.Current.Build(new ImageJob(myBlob,outputBlob,instructions));
}

编辑：解决方案.

#r "Microsoft.WindowsAzure.Storage"
using ImageResizer;
using ImageResizer.ExtensionMethods;
using Microsoft.WindowsAzure.Storage.Blob;

public static void Run(Stream myBlob,CloudBlockBlob outputBlob,Scale = ScaleMode.Both
    };

    Stream stream = new MemoryStream();
    ImageBuilder.Current.Build(new ImageJob(myBlob,stream,instructions));
    stream.Seek(0,SeekOrigin.Begin);

    outputBlob.Properties.ContentType = "image/jpeg";
    outputBlob.UploadFromStream(stream);
}