WCF 分散式開發常見錯誤 (7)：Cannot Have Two Operations With Same Name —— OperationContract Name 屬性區分多載

啟動服務失敗：「Cannot have two operations in the same contract with the same name」。WCF 不支援同名多載，需透過 OperationContract(Name="...") 區分。

修正範例

[ServiceContract(Namespace="https://www.cnblogs.com/frank_xl/")]
public interface IWCFService
{
    [OperationContract(Name="SayHello1")] string SayHello();
    [OperationContract(Name="SayHello2")] string SayHello(string name);
    [OperationContract(Name="SayHello3")] string SayHello(string firstName, string lastName);
}

用戶端 Proxy 將生成對應不同名稱的方法。