获取内容 WCF 响应的类型

发布于 2024-10-23 15:12:53 字数 650 浏览 7 评论 0原文

我有一个从服务器下载内容的 WCF 客户端。

服务合同是；

[OperationContract]
        [WebGet(
                UriTemplate = "/my/service/url/{method}/{filename}?tradeId={tradeId}&docType={docType}&language={language}&version={version}",
                ResponseFormat = WebMessageFormat.Json,
                BodyStyle = WebMessageBodyStyle.Bare)]
        Stream GetDocument(string method, string filename, string tradeId, string docType, string version, string language);

返回类型是 Stream。我所做的只是将该流写入文件即可工作。

现在，我想对此进行修改。我想知道下载文档的 MIME 类型。我知道它在服务器上设置正确。我只需要取回它。

我对 WCF 缺乏经验，不知道该怎么做。有人可以告诉我吗？

非常感谢

原文

I have a WCF client that download content from the server.

the service contract is;

[OperationContract]
        [WebGet(
                UriTemplate = "/my/service/url/{method}/{filename}?tradeId={tradeId}&docType={docType}&language={language}&version={version}",
                ResponseFormat = WebMessageFormat.Json,
                BodyStyle = WebMessageBodyStyle.Bare)]
        Stream GetDocument(string method, string filename, string tradeId, string docType, string version, string language);

The return type is a Stream. What I do is simply just write that stream to a file and it works.

Now, I want to make modification on this. I want to know the MIME type of the downloaded document. I know it is set properly on the server. I simply need to retrieve it.

I have little experience with WCF and don't know how to do that. Can someone let me know?

Many thanks

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流绪微梦 2024-10-30 15:12:53

您必须有权访问 OperationContext 或 WebOperationContext。要在客户端上实现此目的，请使用 OperationContextScope：

using (var scope = new OperationContextScope((IContextChannel)proxy))
{
    Stream document = proxy.GetDocument(...);
    string contentType = WebOperationContext.Current.IncomingResponse.ContentType;
}

You must get access to OperationContext or WebOperationContext. To achieve that on a client use OperationContextScope:

using (var scope = new OperationContextScope((IContextChannel)proxy))
{
    Stream document = proxy.GetDocument(...);
    string contentType = WebOperationContext.Current.IncomingResponse.ContentType;
}

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