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LogicalMethodInfo.EndInvoke Method

Ends an asynchronous invocation of the method represented by the current LogicalMethodInfo.

[Visual Basic]
Public Function EndInvoke( _
   ByVal target As Object, _
   ByVal asyncResult As IAsyncResult _
) As Object()
[C#]
public object[] EndInvoke(
 object target,
 IAsyncResult asyncResult
);
[C++]
public: Object* EndInvoke(
 Object* target,
 IAsyncResult* asyncResult
)  __gc[];
[JScript]
public function EndInvoke(
   target : Object,
 asyncResult : IAsyncResult
) : Object[];

Parameters

target
The instance of the Object on which to invoke the method.
asyncResult
The IAsyncResult returned from BeginInvoke.

Return Value

An array of objects containing the return value and any by-reference or out parameters of the derived class method.

Exceptions

Exception Type Condition
TargetException The target parameter is a null reference (Nothing in Visual Basic).
MemberAccessException The caller does not have permission to invoke the method.
TargetInvocationException The invoked method throws an exception.

Example

[Visual Basic] 
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


[C#] 
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.");
}

[C++] 
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(S"BeginAdd");
      MethodInfo* myEndMethod = myType->GetMethod(S"EndAdd");

      // Create an instance of the LogicalMethodInfo class.
      MethodInfo* temp0 [] = {myBeginMethod,myEndMethod};
      LogicalMethodInfo* myLogicalMethodInfo =
         (LogicalMethodInfo::Create(temp0,
         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(0, MyEndIntimationMethod);

      // Begin to invoke the Add method.
      Object* temp1 [] = {__box(10),__box(10)};
      IAsyncResult* myAsyncResult = myLogicalMethodInfo->BeginInvoke(
         myMathService,temp1,myAsyncCallback,0);

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

      // Get the result.
      Object* myReturnValue[];
      myReturnValue = myLogicalMethodInfo->EndInvoke(myMathService,myAsyncResult);

      Console::WriteLine(S"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(S"Asynchronous call on Add method finished.");
   }

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

LogicalMethodInfo Class | LogicalMethodInfo Members | System.Web.Services.Protocols Namespace

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