wcf - 是否可以为 WCF WebGet 方法设置 ContentType？

Question

我正在使用返回图像数据流的 WCF restful/http 方法。我想确保内容类型被标记为“image/png”。该方法定义为:

[ServiceContract]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall)]
public class TileImageService
{
    [WebGet(UriTemplate = "{id}")]
    public Stream GetTileImage(string id)
    {
        Bitmap bmp = new Bitmap(173, 173);
        Graphics g = Graphics.FromImage(bmp);

        g.Clear(Color.Blue);
        g.DrawString(DateTime.Now.ToLongTimeString(), new Font("Chiller", 20), Brushes.White, new PointF(10, 10));
        g.Flush();

        MemoryStream ms = new MemoryStream();
        bmp.Save(ms, ImageFormat.Png);

        ms.Seek(0, SeekOrigin.Begin);

        return ms;
    }
}

在 Firefox 中，内容类型似乎被标记为应用程序/八位字节流。有没有办法更改内容类型？

Answer 1

抱歉，我只记得我以前做过:

WebOperationContext.Current.OutgoingResponse.ContentType = "text/html"; // or anything