Question

WCF服务合同：

[ServiceContract]
public interface IServerService
{
    [OperationContract]
    GetServerDatetimeCallback GetServerDatetime();
}

WCF服务：

public class ServerService : IServerService
{

    public GetServerDatetimeCallback GetServerDatetime()
    {
        GetServerDatetimeCallback callback = new GetServerDatetimeCallback();
        try
        {
            callback.ServerDatetime = DateTime.Now;
            callback.Result = 1;
            return callback;
        }
        catch (Exception ex)
        {
            callback.Result = 255;
            return callback;
        }
    }
}

客户端设置：

ServiceAddress：＆＃39; net.tcp：// localhost：50011 / ServerService / mex＆＃39; 选项：＆＃39;允许生成异步操作＆＃39; - 检查，＆＃39;生成基于任务的操作＆＃39; - 选择

客户端调用WCF代码：

private ServerServiceClient client = new ServerServiceClient();

public async Task<GetServerDatetimeCallback> GetServerDatetimeAsync()
{
    return await client.GetServerDatetimeAsync();
}

通常我会像这样调用wcf函数async，并且总是正常工作。但今天我又在一个新项目中再做一次，我找到了等待client.GetServerDatetimeAsync（）;＆＃39;不再返回＆＃39; GetServerDatetimeCallback＆＃39;对象，但是＆＃39; GetServerDatetimeResponse＆＃39;。

这是怎么发生的？

UPDATED GetServerDatetimeCallback对象

[DataContract]
public class GetServerDatetimeCallback
{
    [DataMember]
    public byte Result { get; set; }

    [DataMember]
    public DateTime ServerDatetime { get; set; }
}

这是服务参考生成

[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "4.0.0.0")]
[System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
[System.ServiceModel.MessageContractAttribute(WrapperName="GetServerDatetimeResponse", WrapperNamespace="http://tempuri.org/", IsWrapped=true)]
public partial class GetServerDatetimeResponse {

    [System.ServiceModel.MessageBodyMemberAttribute(Namespace="http://tempuri.org/", Order=0)]
    [System.Xml.Serialization.XmlElementAttribute(IsNullable=true)]
    public ServerServiceObjects.GetServerDatetimeCallback GetServerDatetimeResult;

    public GetServerDatetimeResponse() {
    }

    public GetServerDatetimeResponse(ServerServiceObjects.GetServerDatetimeCallback GetServerDatetimeResult) {
        this.GetServerDatetimeResult = GetServerDatetimeResult;
    }
}

我不知道为什么它生成了System.ServiceModel.MessageContractAttribute而不是System.Runtime.Serialization.DataContractAttribute？

为什么我的WCF客户端引用（基于任务），生成了xxxxxResponse？

0 个答案: