LogicalMethodInfo.BeginInvoke(Object, Object[], AsyncCallback, Object) Metode

Definisi

Ruang nama:

System.Web.Services.Protocols

Rakitan:

System.Web.Services.dll

Memulai pemanggilan asinkron dari metode yang diwakili oleh ini LogicalMethodInfo.

public:
 IAsyncResult ^ BeginInvoke(System::Object ^ target, cli::array <System::Object ^> ^ values, AsyncCallback ^ callback, System::Object ^ asyncState);

public IAsyncResult BeginInvoke(object target, object[] values, AsyncCallback callback, object asyncState);

member this.BeginInvoke : obj * obj[] * AsyncCallback * obj -> IAsyncResult

Public Function BeginInvoke (target As Object, values As Object(), callback As AsyncCallback, asyncState As Object) As IAsyncResult

Parameter

target

Object

Instans Object tempat untuk memanggil metode.

values

Object[]

Daftar argumen untuk metode yang dipanggil. Ini adalah array objek dengan angka, urutan, dan jenis yang sama dengan parameter metode . Jika metode tidak memerlukan parameter apa pun, values harus null.

callback

AsyncCallback

Delegasi untuk memanggil ketika pemanggilan asinkron selesai. Jika callback adalah null, delegasi tidak dipanggil.

asyncState

Object

Informasi status yang diteruskan ke delegasi.

Mengembalikan

IAsyncResult

Yang IAsyncResult diteruskan ke EndInvoke(Object, IAsyncResult) untuk mendapatkan nilai yang dikembalikan dari panggilan metode jarak jauh.

Pengecualian

TargetException

Parameternya target adalah null.

ArgumentException

Jumlah, jenis, dan urutan parameter di values tidak cocok dengan tanda tangan metode yang dipanggil.

MemberAccessException

Pemanggil tidak memiliki izin untuk memanggil metode .

Contoh

public:
   [PermissionSet(SecurityAction::Demand, Name="FullTrust")]
   static void main()
   {
      // Get the type information.
      // Note: The MyMath class is a proxy class generated by the Wsdl.exe
      // utility for the Math Web service. This class can also be found in
      // the SoapHttpClientProtocol class example.
      Type^ myType = MyMath::MyMath::typeid;

      // Get the method info.
      MethodInfo^ myBeginMethod = myType->GetMethod( "BeginAdd" );
      MethodInfo^ myEndMethod = myType->GetMethod( "EndAdd" );

      // Create an instance of the LogicalMethodInfo class.
      array<MethodInfo^>^ temp0 = { myBeginMethod, myEndMethod };
      LogicalMethodInfo^ myLogicalMethodInfo =
         ( LogicalMethodInfo::Create( temp0, LogicalMethodTypes::Async ) )[ 0 ];

      // Get an instance of the proxy class.
      MyMath::MyMath^ myMathService = gcnew MyMath::MyMath;

      // Call the MyEndIntimationMethod method to intimate the end of
      // the asynchronous call.
      AsyncCallback^ myAsyncCallback = gcnew AsyncCallback( MyEndIntimationMethod );

      // Begin to invoke the Add method.
      array<Object^>^ temp1 = { 10, 10 };
      IAsyncResult^ myAsyncResult = myLogicalMethodInfo->BeginInvoke(
         myMathService, temp1, myAsyncCallback, nullptr );

      // Wait until invoke is complete.
      myAsyncResult->AsyncWaitHandle->WaitOne();

      // Get the result.
      array<Object^>^ myReturnValue;
      myReturnValue = myLogicalMethodInfo->EndInvoke( myMathService, myAsyncResult );

      Console::WriteLine( "Sum of 10 and 10 is {0}", myReturnValue[ 0 ] );
   }

   // This method will be called at the end of the asynchronous call.
   static void MyEndIntimationMethod( IAsyncResult^ /*Result*/ )
   {
      Console::WriteLine( "Asynchronous call on Add method finished." );
   }

public static void Main()
{
   // Get the type information.
   // Note: The MyMath class is a proxy class generated by the Wsdl.exe
   // utility for the Math Web service. This class can also be found in
   // the SoapHttpClientProtocol class example.
   Type myType = typeof(MyMath.MyMath);

   // Get the method info.
   MethodInfo myBeginMethod = myType.GetMethod("BeginAdd");
   MethodInfo myEndMethod = myType.GetMethod("EndAdd");

   // Create an instance of the LogicalMethodInfo class.
   LogicalMethodInfo myLogicalMethodInfo =
      (LogicalMethodInfo.Create(new MethodInfo[] {myBeginMethod,myEndMethod},
      LogicalMethodTypes.Async))[0];

   // Get an instance of the proxy class.
   MyMath.MyMath myMathService = new MyMath.MyMath();

   // Call the MyEndIntimationMethod method to intimate the end of
   // the asynchronous call.
   AsyncCallback myAsyncCallback = new AsyncCallback(MyEndIntimationMethod);

   // Begin to invoke the Add method.
   IAsyncResult myAsyncResult = myLogicalMethodInfo.BeginInvoke(
      myMathService,new object[]{10,10},myAsyncCallback,null);

   // Wait until invoke is complete.
   myAsyncResult.AsyncWaitHandle.WaitOne();

   // Get the result.
   object[] myReturnValue;
   myReturnValue = myLogicalMethodInfo.EndInvoke(myMathService,myAsyncResult);

   Console.WriteLine("Sum of 10 and 10 is " + myReturnValue[0]);
}

// This method will be called at the end of the asynchronous call.
static void MyEndIntimationMethod(IAsyncResult Result)
{
   Console.WriteLine("Asynchronous call on Add method finished.");
}

Public Shared Sub Main()

   ' Get the type information.
   ' Note: The MyMath class is a proxy class generated by the Wsdl.exe 
   ' utility for the Math Web Service. This class can also be found in
   ' the SoapHttpClientProtocol class example. 
   Dim myType As Type = GetType(MyMath.MyMath)

   ' Get the method info.
   Dim myBeginMethod As MethodInfo = myType.GetMethod("BeginAdd")
   Dim myEndMethod As MethodInfo = myType.GetMethod("EndAdd")

   ' Create an instance of the LogicalMethodInfo class.
   Dim myLogicalMethodInfo As LogicalMethodInfo = _
      LogicalMethodInfo.Create(New MethodInfo() {myBeginMethod, myEndMethod}, _
      LogicalMethodTypes.Async)(0)

   ' Get an instance of the proxy class.
   Dim myMathService As New MyMath.MyMath()

   ' Call the MyEndIntimationMethod method to intimate the end of 
   ' the asynchronous call.
   Dim myAsyncCallback As New AsyncCallback(AddressOf MyEndIntimationMethod)

   ' Beging to invoke the Add method.
   Dim myAsyncResult As IAsyncResult = _
      myLogicalMethodInfo.BeginInvoke( _
      myMathService, New Object() {10, 10}, myAsyncCallback, Nothing)

   ' Wait until invoke is complete.
   myAsyncResult.AsyncWaitHandle.WaitOne()

   ' Get the result.
   Dim myReturnValue() As Object
   myReturnValue = myLogicalMethodInfo.EndInvoke(myMathService, myAsyncResult)

   Console.WriteLine(("Sum of 10 and 10 is " & myReturnValue(0)))
End Sub

' This method will be called at the end of asynchronous call.
Shared Sub MyEndIntimationMethod(ByVal Result As IAsyncResult)
   Console.WriteLine("Asynchronous call on method 'Add' finished.")
End Sub