服务遇到错误 [英] Service Encountered an error

问题描述

有人可以帮助我吗，我遇到这样的错误:
System.InvalidOperationException:为使操作UploadImage中的请求成为流，该操作必须具有一个类型为Stream的单个参数.

这是我在servicecontract中的代码

Can anyone help me on this , I am getting an error like this :
System.InvalidOperationException: For request in operation UploadImage to be a stream the operation must have a single parameter whose type is Stream.

This is my code in servicecontract

[OperationContract]
[WebInvoke(Method = "POST", ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped, UriTemplate = "{DataBaseName}/{TableName}/UploadImages?ID={ID}")]
bool UploadImage(string DataBaseName, string TableName, int ID, Stream ImageStream);

推荐答案

您为ImageStream提供的值是Stream类型.错误消息会告诉您确切的问题.向我们显示您拨打电话的代码，我们可能会提供进一步的帮助.

You need to make sure that the value you supply for ImageStream is of type Stream. The error message tells you exactly what is wrong. Show us the code where you make the call and we may be able to help further.

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