CallContext.SetData(String, Object) 方法

定義

命名空間:
System.Runtime.Remoting.Messaging
組件:
mscorlib.dll

儲存給定物件並將其與指定名稱關聯。

public:
 static void SetData(System::String ^ name, System::Object ^ data);
public static void SetData(string name, object data);
[System.Security.SecurityCritical]
public static void SetData(string name, object data);
static member SetData : string * obj -> unit
[<System.Security.SecurityCritical>]
static member SetData : string * obj -> unit
Public Shared Sub SetData (name As String, data As Object)

參數

name
String

在通話情境中用來關聯新項目的名稱。

data
Object

在呼叫上下文中儲存的物件。

屬性
SecurityCriticalAttribute

例外狀況

SecurityException

直接呼叫者沒有基礎設施權限。

範例

以下程式碼範例示範 SetData 使用此方法將 主物件與身份物件 傳送至遠端地點以進行識別。 若要查看本範例中使用的 LogicalCallContextData 類別程式碼，請參閱介面範例 ILogicalThreadAffinative 。 若要查看本範例中使用的 HelloServiceClass 類別程式碼，請參閱該方法的範例 GetData 。 若要查看本範例中使用的伺服器類別程式碼，請參閱該 RegisterActivatedServiceType 類別的範例。

#using <system.dll>
#using <system.runtime.remoting.dll>
#using <service.dll>

using namespace System;
using namespace System::Runtime::Remoting;
using namespace System::Runtime::Remoting::Channels;
using namespace System::Runtime::Remoting::Channels::Tcp;
using namespace System::Runtime::Remoting::Messaging;
using namespace System::Security::Principal;
int main()
{
   GenericIdentity^ ident = gcnew GenericIdentity( "Bob" );
   array<String^>^id = gcnew array<String^>(1);
   id[ 0 ] = "Level1";
   GenericPrincipal^ prpal = gcnew GenericPrincipal( ident,id );
   LogicalCallContextData ^ data = gcnew LogicalCallContextData( prpal );

   //Enter data into the CallContext
   CallContext::SetData( "test data", data );
   Console::WriteLine( data->numOfAccesses );
   ChannelServices::RegisterChannel( gcnew TcpChannel );
   RemotingConfiguration::RegisterActivatedClientType( HelloServiceClass::typeid, "tcp://localhost:8082" );
   HelloServiceClass ^ service = gcnew HelloServiceClass;
   if ( service == nullptr )
   {
      Console::WriteLine( "Could not locate server." );
      return 0;
   }

   // call remote method
   Console::WriteLine();
   Console::WriteLine( "Calling remote Object*" );
   Console::WriteLine( service->HelloMethod( "Caveman" ) );
   Console::WriteLine( service->HelloMethod( "Spaceman" ) );
   Console::WriteLine( service->HelloMethod( "Bob" ) );
   Console::WriteLine( "Finished remote Object* call" );
   Console::WriteLine();

   //Extract the returned data from the call context
   LogicalCallContextData ^ returnedData = static_cast<LogicalCallContextData ^>(CallContext::GetData( "test data" ));
   Console::WriteLine( data->numOfAccesses );
   Console::WriteLine( returnedData->numOfAccesses );
   return 0;
}

using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Remoting.Messaging;
using System.Security.Principal;
using System.Security.Permissions;

public class ClientClass {
   public static void Main() {

      GenericIdentity ident = new GenericIdentity("Bob");
      GenericPrincipal prpal = new GenericPrincipal(ident,
                                                    new string[] {"Level1"});
      LogicalCallContextData data = new LogicalCallContextData(prpal);

      //Enter data into the CallContext
      CallContext.SetData("test data", data);

      Console.WriteLine(data.numOfAccesses);

      ChannelServices.RegisterChannel(new TcpChannel());

      RemotingConfiguration.RegisterActivatedClientType(typeof(HelloServiceClass),
                                                        "tcp://localhost:8082");

      HelloServiceClass service = new HelloServiceClass();

      if(service == null) {
          Console.WriteLine("Could not locate server.");
          return;
      }

      // call remote method
      Console.WriteLine();
      Console.WriteLine("Calling remote object");
      Console.WriteLine(service.HelloMethod("Caveman"));
      Console.WriteLine(service.HelloMethod("Spaceman"));
      Console.WriteLine(service.HelloMethod("Bob"));
      Console.WriteLine("Finished remote object call");
      Console.WriteLine();

      //Extract the returned data from the call context
      LogicalCallContextData returnedData =
         (LogicalCallContextData)CallContext.GetData("test data");

      Console.WriteLine(data.numOfAccesses);
      Console.WriteLine(returnedData.numOfAccesses);
   }
}

Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Tcp
Imports System.Runtime.Remoting.Messaging
Imports System.Security.Principal
Imports System.Security.Permissions


Public Class ClientClass
   <PermissionSet(SecurityAction.LinkDemand)> _
   Public Shared Sub Main()
      
      Dim ident As New GenericIdentity("Bob")
      Dim prpal As New GenericPrincipal(ident, New String() {"Level1"})
      Dim data As New LogicalCallContextData(prpal)
      
      'Enter data into the CallContext
      CallContext.SetData("test data", data)
      
      
      Console.WriteLine(data.numOfAccesses)
      
      ChannelServices.RegisterChannel(New TcpChannel())
      
      RemotingConfiguration.RegisterActivatedClientType(GetType(HelloServiceClass), "tcp://localhost:8082")
      
      Dim service As New HelloServiceClass()
      
      If service Is Nothing Then
         Console.WriteLine("Could not locate server.")
         Return
      End If
      
      
      ' call remote method
      Console.WriteLine()
      Console.WriteLine("Calling remote object")
      Console.WriteLine(service.HelloMethod("Caveman"))
      Console.WriteLine(service.HelloMethod("Spaceman"))
      Console.WriteLine(service.HelloMethod("Bob"))
      Console.WriteLine("Finished remote object call")
      Console.WriteLine()
      
      'Extract the returned data from the call context
      Dim returnedData As LogicalCallContextData = CType(CallContext.GetData("test data"), LogicalCallContextData)
      
      Console.WriteLine(data.numOfAccesses)
      Console.WriteLine(returnedData.numOfAccesses)

   End Sub

End Class

適用於