LogicalMethodInfo.AsyncStateParameter プロパティ

非同期呼び出しの Begin メソッドの AsyncState パラメータのパラメータ情報を取得します。

Public ReadOnly Property AsyncStateParameter As ParameterInfo
[C#]
public ParameterInfo AsyncStateParameter {get;}
[C++]
public: __property ParameterInfo* get_AsyncStateParameter();
[JScript]
public function get AsyncStateParameter() : ParameterInfo;

プロパティ値

非同期呼び出しの Begin メソッドの AsyncState パラメータを表す ParameterInfo 。

解説

共通言語ランタイムにおける非同期のデザインパターンでは、 Begin メソッドを呼び出して非同期メソッド呼び出しを開始し、 End メソッドを呼び出して呼び出しを完了します。 Begin メソッドは、このメソッドの同期バージョンで定義するパラメータの他に 2 つのパラメータを取得します。1 つはデリゲートを格納するメソッドで、もう 1 つはデリゲートに渡す必要があるステータス情報を格納するメソッドです。このプロパティは、デリゲートに渡す必要があるステータス情報を表します。XML Web サービスの非同期呼び出しについては、「 XML Web サービスとの非同期通信」を参照してください。

使用例

 
Imports System
Imports System.Reflection
Imports System.Web.Services.Protocols
Imports Microsoft.VisualBasic

Public Class MyService
   Inherits SoapHttpClientProtocol
   
   Public Function BeginAdd _
       (xValue As Integer, yValue As Integer, callback As AsyncCallback, asyncState As Object) _
                                                                                    As IAsyncResult
      Return Me.BeginInvoke("Add", New Object() {xValue, yValue}, callback, asyncState)
   End Function 'BeginAdd
   
   Public Function EndAdd(asyncResult As System.IAsyncResult) As Integer
      Dim results As Object() = Me.EndInvoke(asyncResult)
      Return CInt(results(0))
   End Function 'EndAdd
End Class 'MyService

Public Class LogicalMethodInfo_Create
   
   Public Shared Sub Main()
      Dim myType As Type = GetType(MyService)
      Dim myBeginMethod As MethodInfo = myType.GetMethod("BeginAdd")
      Dim myEndMethod As MethodInfo = myType.GetMethod("EndAdd")
      Dim myLogicalMethodInfo As LogicalMethodInfo = _
          LogicalMethodInfo.Create(New MethodInfo() _
                          {myBeginMethod, myEndMethod}, LogicalMethodTypes.Async)(0)
      
      Console.WriteLine _
        (ControlChars.Newline + "The asynchronous callback parameter of method {0} is :" + _ 
                                             ControlChars.Newline, myLogicalMethodInfo.Name)
      Console.WriteLine _
        (ControlChars.Tab + myLogicalMethodInfo.AsyncCallbackParameter.Name + " : " + _
                    myLogicalMethodInfo.AsyncCallbackParameter.ParameterType.ToString())
      
      Console.WriteLine _
        (ControlChars.Newline + "The asynchronous state parameter of method {0} is :" + _
                                             ControlChars.Newline, myLogicalMethodInfo.Name)
      Console.WriteLine _
       (ControlChars.Tab + myLogicalMethodInfo.AsyncStateParameter.Name + " : " + _
                               myLogicalMethodInfo.AsyncStateParameter.ParameterType.ToString())
      
      Console.WriteLine _
       (ControlChars.Newline + "The asynchronous result parameter of method {0} is :" + _
                                                     ControlChars.Newline, myLogicalMethodInfo.Name)
      Console.WriteLine _
       (ControlChars.Tab + myLogicalMethodInfo.AsyncResultParameter.Name + " : " + _
                               myLogicalMethodInfo.AsyncResultParameter.ParameterType.ToString())
      
      Console.WriteLine _
        (ControlChars.Newline + "The begin method of the asynchronous method {0} is :" + _
                                             ControlChars.Newline, myLogicalMethodInfo.Name)
      Console.WriteLine(ControlChars.Tab + myLogicalMethodInfo.BeginMethodInfo.ToString())
      
      Console.WriteLine _
       (ControlChars.Newline + "The end method of the asynchronous method {0} is :" + _
                                                     ControlChars.Newline, myLogicalMethodInfo.Name)
      Console.WriteLine(ControlChars.Tab + myLogicalMethodInfo.EndMethodInfo.ToString())
      
      If myLogicalMethodInfo.IsAsync Then
         Console.WriteLine(ControlChars.Newline + "{0} is asynchronous", myLogicalMethodInfo.Name)
      Else
         Console.WriteLine(ControlChars.Newline + "{0} is synchronous", myLogicalMethodInfo.Name)
      End If 
   End Sub 'Main
End Class 'LogicalMethodInfo_Create

[C#] 
using System;
using System.Reflection;
using System.Web.Services.Protocols;

public class MyService : SoapHttpClientProtocol
{
   public IAsyncResult BeginAdd(int xValue, int yValue,
                                AsyncCallback callback,
                                object asyncState)
   {
      return this.BeginInvoke("Add", new object[] {xValue,yValue}, callback, asyncState);
   }

   public int EndAdd(System.IAsyncResult asyncResult) 
   {
      object[] results = this.EndInvoke(asyncResult);
      return ((int)(results[0]));
   } 
}

public class LogicalMethodInfo_Create
{
   public static void Main()
   {
      Type myType = typeof(MyService);
      MethodInfo myBeginMethod = myType.GetMethod("BeginAdd");
      MethodInfo myEndMethod = myType.GetMethod("EndAdd");
      LogicalMethodInfo myLogicalMethodInfo = 
         (LogicalMethodInfo.Create(new MethodInfo[] { myBeginMethod,
                                                      myEndMethod },
                                   LogicalMethodTypes.Async))[0];

      Console.WriteLine("\nThe asynchronous callback parameter of method {0} is :\n",
                           myLogicalMethodInfo.Name);
      Console.WriteLine("\t" + myLogicalMethodInfo.AsyncCallbackParameter.Name +
                              " : " + myLogicalMethodInfo.AsyncCallbackParameter.ParameterType);

            Console.WriteLine("\nThe asynchronous state parameter of method {0} is :\n",
         myLogicalMethodInfo.Name);
      Console.WriteLine("\t" + myLogicalMethodInfo.AsyncStateParameter.Name +
         " : " + myLogicalMethodInfo.AsyncStateParameter.ParameterType);

      Console.WriteLine("\nThe asynchronous result parameter of method {0} is :\n",
         myLogicalMethodInfo.Name);
      Console.WriteLine("\t" + myLogicalMethodInfo.AsyncResultParameter.Name +
         " : " + myLogicalMethodInfo.AsyncResultParameter.ParameterType);

      Console.WriteLine("\nThe begin method of the asynchronous method {0} is :\n",
         myLogicalMethodInfo.Name);
      Console.WriteLine("\t" + myLogicalMethodInfo.BeginMethodInfo);

      Console.WriteLine("\nThe end method of the asynchronous method {0} is :\n",
         myLogicalMethodInfo.Name);
      Console.WriteLine("\t" + myLogicalMethodInfo.EndMethodInfo);

      if(myLogicalMethodInfo.IsAsync)
         Console.WriteLine("\n{0} is asynchronous", myLogicalMethodInfo.Name);
      else
         Console.WriteLine("\n{0} is synchronous", myLogicalMethodInfo.Name);

   }
}

[C++] 
#using <mscorlib.dll>
#using <System.dll>
#using <System.Web.dll>
#using <System.Web.Services.dll>
using namespace System;
using namespace System::Reflection;
using namespace System::Web::Services::Protocols;

public __gc class MyService : public SoapHttpClientProtocol {
public:
   IAsyncResult* BeginAdd(int xValue, int yValue,
      AsyncCallback* callback,
      Object* asyncState) {

         Object* temp0 [] = {__box(xValue), __box(yValue)};

         return this->BeginInvoke(S"Add", temp0, callback, asyncState);
      }

public:
   int EndAdd(System::IAsyncResult* asyncResult) {
      Object* results[] = this->EndInvoke(asyncResult);
      return *dynamic_cast<int __gc *>(results[0]);
   }
};

int main() {
   Type*  myType = __typeof(MyService);
   MethodInfo*  myBeginMethod = myType->GetMethod(S"BeginAdd");
   MethodInfo*  myEndMethod = myType->GetMethod(S"EndAdd");
   MethodInfo* temp0 [] = {myBeginMethod, myEndMethod};
   LogicalMethodInfo* myLogicalMethodInfo = 
      LogicalMethodInfo::Create(temp0, LogicalMethodTypes::Async)[0];

   Console::WriteLine(S"\nThe asynchronous callback parameter of method {0} is :\n",
      myLogicalMethodInfo->Name);
   Console::WriteLine(S"\t {0} : {1}", myLogicalMethodInfo->AsyncCallbackParameter->Name,
      myLogicalMethodInfo->AsyncCallbackParameter->ParameterType);

   Console::WriteLine(S"\nThe asynchronous state parameter of method {0} is :\n",
      myLogicalMethodInfo->Name);
   Console::WriteLine(S"\t {0} : {1}", myLogicalMethodInfo->AsyncStateParameter->Name,
      myLogicalMethodInfo->AsyncStateParameter->ParameterType);

   Console::WriteLine(S"\nThe asynchronous result parameter of method {0} is :\n",
      myLogicalMethodInfo->Name);
   Console::WriteLine(S"\t {0} : {1}", myLogicalMethodInfo->AsyncResultParameter->Name,
      myLogicalMethodInfo->AsyncResultParameter->ParameterType);

   Console::WriteLine(S"\nThe begin method of the asynchronous method {0} is :\n",
      myLogicalMethodInfo->Name);
   Console::WriteLine(S"\t {0}", myLogicalMethodInfo->BeginMethodInfo);

   Console::WriteLine(S"\nThe end method of the asynchronous method {0} is :\n",
      myLogicalMethodInfo->Name);
   Console::WriteLine(S"\t {0}", myLogicalMethodInfo->EndMethodInfo);

   if (myLogicalMethodInfo->IsAsync)
      Console::WriteLine(S"\n {0} is asynchronous", 
      myLogicalMethodInfo->Name);
   else
      Console::WriteLine(S"\n {0} is synchronous", 
      myLogicalMethodInfo->Name);
}

[JScript] JScript のサンプルはありません。Visual Basic、C#、および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタボタンをクリックします。

必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ

参照

Last updated on 2008-03-28

次の方法で共有

LogicalMethodInfo.AsyncStateParameter プロパティ

プロパティ値

解説

使用例

必要条件

参照

その他のリソース