C# 客户端代理未创建方法

我有一个错误：

无法将类型“void”隐式转换为“string”

。我按照每个步骤正确创建Web服务（首先编写服务，编译并在浏览器中查看它，然后使用“添加服务引用”向导创建服务引用）。以下是WP代码：

private void Button_Click(object sender, RoutedEventArgs e)
    {
         ServiceReference1.Service1Client proxy = new ServiceReference1.Service1Client();
        string myName = "Nick";
        AgeTxtBlck.Text = proxy.GetAgeAsync(myName);
    }

服务实现是：

public string GetAge(string myName)
    {
        DataClasses1DataContext data = new DataClasses1DataContext();
        var myAge = from a in data.Users where a.uName == myName select a;
        return GetAge(myName).ToString();
    }

为了更清楚地说明我的问题，这里是客户端生成的代理：

 public partial class Service1Client : System.ServiceModel.ClientBase<PhoneApp1.ServiceReference1.IService1>, PhoneApp1.ServiceReference1.IService1 {

    private BeginOperationDelegate onBeginGetAgeDelegate;
    private EndOperationDelegate onEndGetAgeDelegate;
    private System.Threading.SendOrPostCallback onGetAgeCompletedDelegate;
    private BeginOperationDelegate onBeginOpenDelegate;
    private EndOperationDelegate onEndOpenDelegate;
    private System.Threading.SendOrPostCallback onOpenCompletedDelegate;
    private BeginOperationDelegate onBeginCloseDelegate;
    private EndOperationDelegate onEndCloseDelegate;

    private System.Threading.SendOrPostCallback onCloseCompletedDelegate;

    public Service1Client() {
    }

    public Service1Client(string endpointConfigurationName) : 
            base(endpointConfigurationName) {
    }

    public Service1Client(string endpointConfigurationName, string remoteAddress) : 
            base(endpointConfigurationName, remoteAddress) {
    }

    public Service1Client(string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) : 
            base(endpointConfigurationName, remoteAddress) {
    }

    public Service1Client(System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) : 
            base(binding, remoteAddress) {
    }

它应该是空的吗？这个问题有什么解决办法吗？
编辑：以橙色供电。我的Web.config是：

 <?xml version="1.0"?>
<configuration>

  <connectionStrings>
    <add name="Database1ConnectionString" connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\Database1.mdf;Integrated Security=True"
      providerName="System.Data.SqlClient" />
  </connectionStrings>
  <appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5"/>
  </system.web>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior>

          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>

          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <protocolMapping>
        <add binding="basicHttpsBinding" scheme="https" />
    </protocolMapping>    
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <directoryBrowse enabled="true"/>
  </system.webServer>
</configuration>

我不确定你所说的“服务实现对象”是什么意思（对不起，我是初学者），但我在Reference.cs中找到了这个（如果我发布了错误的代码，请更正我）

编辑：附加参考.cs代码：

public void GetAgeAsync(string myName, object userState) {
        if ((this.onBeginGetAgeDelegate == null)) {
            this.onBeginGetAgeDelegate = new BeginOperationDelegate(this.OnBeginGetAge);
        }
        if ((this.onEndGetAgeDelegate == null)) {
            this.onEndGetAgeDelegate = new EndOperationDelegate(this.OnEndGetAge);
        }
        if ((this.onGetAgeCompletedDelegate == null)) {
            this.onGetAgeCompletedDelegate = new System.Threading.SendOrPostCallback(this.OnGetAgeCompleted);
        }
        base.InvokeAsync(this.onBeginGetAgeDelegate, new object[] {
                    myName}, this.onEndGetAgeDelegate, this.onGetAgeCompletedDelegate, userState);
    }

---

由于您使用的是基于事件的异步形式的操作，因此需要如下内容：

private void Button_Click(object sender, RoutedEventArgs e)
{
    ServiceReference1.Service1Client proxy = new ServiceReference1.Service1Client();
    proxy.GetAgeAsyncCompleted += SetAgeText;
    string myName = "Nick";
    proxy.GetAgeAsync(myName);
}

private void SetAgeText(object sender, ServiceReference1.GetAgeCompletedEventArgs e)
{
    AgeTxtBlck.Text = (string) e.Result[0];
}

---

引用是从契约生成的，契约是您在某处定义的接口。更具体地说，

PhoneApp1.ServiceReference1.IService1

有一个名为

GetAge

的无效方法。您需要更改接口上的签名并重新生成代理。@PoweredByOrange，我只有

字符串GetAge（字符串myName）[OperationContract]

下的code>。我从头开始这个项目，只添加了这个方法。这是我现在的签名吗？奇怪。您是如何生成代理的？@PoweredByOrange，我正在使用Visual Studio的“添加服务引用”对话框。是的，但是您在URL中键入了什么？我遇到了一个错误：

找不到类型或命名空间名称“GetAgeCompletedEventArgs”（您是否缺少using指令或程序集引用？）

我打赌你可以自己解决这个问题，但我打赌这确实是

服务引用1.GetAgeCompletedEventArgs

。这很有帮助，但出现了另一个错误：

无法将类型“char”转换为“string”

。我像

AgeTxtBlck.Text=e.Result那样修复了它。啊哈！我想你遗漏了上面的一些代码。属性
Result
可能被定义为
get{return（string）this.Result[0]；}
，这样就不需要我的强制转换和
[0]
。
public partial class GetAgeCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {
    private object[] results;
    public GetAgeCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) : 
            base(exception, cancelled, userState) {
        this.results = results;
    }

public void GetAgeAsync(string myName, object userState) {
        if ((this.onBeginGetAgeDelegate == null)) {
            this.onBeginGetAgeDelegate = new BeginOperationDelegate(this.OnBeginGetAge);
        }
        if ((this.onEndGetAgeDelegate == null)) {
            this.onEndGetAgeDelegate = new EndOperationDelegate(this.OnEndGetAge);
        }
        if ((this.onGetAgeCompletedDelegate == null)) {
            this.onGetAgeCompletedDelegate = new System.Threading.SendOrPostCallback(this.OnGetAgeCompleted);
        }
        base.InvokeAsync(this.onBeginGetAgeDelegate, new object[] {
                    myName}, this.onEndGetAgeDelegate, this.onGetAgeCompletedDelegate, userState);
    }

private void Button_Click(object sender, RoutedEventArgs e)
{
    ServiceReference1.Service1Client proxy = new ServiceReference1.Service1Client();
    proxy.GetAgeAsyncCompleted += SetAgeText;
    string myName = "Nick";
    proxy.GetAgeAsync(myName);
}

private void SetAgeText(object sender, ServiceReference1.GetAgeCompletedEventArgs e)
{
    AgeTxtBlck.Text = (string) e.Result[0];
}