通过

RemotingServices.IsOneWay 方法

  • 项目

返回一个布尔值，该值指示调用给定消息中指定的方法的客户端在继续执行之前是否等待服务器完成该方法的处理。

**命名空间:**System.Runtime.Remoting
**程序集:**mscorlib（在 mscorlib.dll 中）

语法

声明
Public Shared Function IsOneWay ( _
    method As MethodBase _
) As Boolean
用法
Dim method As MethodBase
Dim returnValue As Boolean

returnValue = RemotingServices.IsOneWay(method)

public static bool IsOneWay (
    MethodBase method
)

public:
static bool IsOneWay (
    MethodBase^ method
)

public static boolean IsOneWay (
    MethodBase method
)

public static function IsOneWay (
    method : MethodBase
) : boolean

参数

  • method
    上述方法。

返回值

如果该方法是单向的，则为 true；否则为 false。

异常

异常类型 条件

SecurityException

直接调用方没有基础结构权限。

备注

当调用单向方法时，客户端不等待服务器完成该消息的处理。客户端方法返回到应用程序，不知道服务器是否将成功处理该消息。使用 OneWayAttribute 将方法标记为单向的。

单向方法不能具有返回值或任何输出参数。

示例

Public Class HelloServer
    Inherits MarshalByRefObject

    Shared Sub New()
        Console.WriteLine("HelloServer activated.")
    End Sub

    <OneWay()> Public Sub SayHelloToServer(ByVal name As String)
        Console.WriteLine("Client invoked SayHelloToServer(""{0}"").", name)
    End Sub

    ' Note the lack of the OneWayAttribute adornment on this method.
<SecurityPermission(SecurityAction.Demand)> _
    Public Function SayHelloToServerAndWait(ByVal name As String) As String
        Console.WriteLine("Client invoked SayHelloToServerAndWait(""{0}"").", name)

        Console.WriteLine( _
            "Client waiting for return? {0}", _
            IIf(RemotingServices.IsOneWay(MethodBase.GetCurrentMethod()), "No", "Yes") _
        )

        Return "Hi there, " + name + "."
    End Function

End Class

public class HelloServer : MarshalByRefObject {

   public HelloServer() {
      Console.WriteLine("HelloServer activated.");
   }

   [OneWay()]
   public void SayHelloToServer(string name) {
      Console.WriteLine("Client invoked SayHelloToServer(\"{0}\").", name);
   }   

[SecurityPermission(SecurityAction.Demand)]
   // Note the lack of the OneWayAttribute adornment on this method.
   public string SayHelloToServerAndWait(string name) {
      Console.WriteLine("Client invoked SayHelloToServerAndWait(\"{0}\").", name);

      Console.WriteLine(
         "Client waiting for return? {0}",
         RemotingServices.IsOneWay(MethodBase.GetCurrentMethod()) ? "No" : "Yes"
      );

      return "Hi there, " + name + ".";
   }
}

public ref class HelloServer: public MarshalByRefObject
{
public:
   HelloServer()
   {
      Console::WriteLine( "HelloServer activated." );
   }

   [OneWay]
   void SayHelloToServer( String^ name )
   {
      Console::WriteLine( "Client invoked SayHelloToServer(\" {0}\").", name );
   }

   // Note the lack of the OneWayAttribute adornment on this method.
   [SecurityPermissionAttribute(SecurityAction::Demand, Flags=SecurityPermissionFlag::Infrastructure)]   
   String^ SayHelloToServerAndWait( String^ name )
   {
      Console::WriteLine( "Client invoked SayHelloToServerAndWait(\" {0}\").", name );
      Console::WriteLine( "Client waiting for return? {0}", RemotingServices::IsOneWay( MethodBase::GetCurrentMethod() ) ? (String^)"No" : "Yes" );
      return String::Format( "Hi there, {0}.", name );
   }
};

.NET Framework 安全性

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

RemotingServices 类
RemotingServices 成员
System.Runtime.Remoting 命名空间