LogicalMethodInfo.Invoke(Object, Object[]) Method

Reference

Definition

Namespace:: System.Web.Services.Protocols

Assembly:: System.Web.Services.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Invokes the method represented by the current LogicalMethodInfo.

public:
 cli::array <System::Object ^> ^ Invoke(System::Object ^ target, cli::array <System::Object ^> ^ values);

public object[] Invoke (object target, object[] values);

member this.Invoke : obj * obj[] -> obj[]

Public Function Invoke (target As Object, values As Object()) As Object()

Parameters

target: Object

The instance of the Object to invoke the method.

values: Object[]

An argument list for the invoked method. This is an array of objects with the same number, order, and type as the parameters of the method. If the method does not require any parameters, the values parameter should be null.

Returns

Object[]

An array of type Object representing the return value and out parameters of the invoked method.

Exceptions

TargetException

The target parameter is null.

ArgumentException

The number, type, and order of parameters in the values parameter do not match the signature of the invoked method.

MemberAccessException

The caller does not have permission to invoke the method.

TargetInvocationException

The invoked method throws an exception.

Examples

#using <System.Web.Services.dll>

using namespace System;
using namespace System::Reflection;
using namespace System::Web::Services::Protocols;

public ref class MyService
{
public:
   int Add( int xValue, int yValue )
   {
      return (xValue + yValue);
   }

};

int main()
{
   Type^ myType = MyService::typeid;
   MethodInfo^ myMethodInfo = myType->GetMethod( "Add" );
   LogicalMethodInfo^ myLogicalMethodInfo = gcnew LogicalMethodInfo( myMethodInfo );
   Console::WriteLine( "\nPrinting properties of method : {0}\n", myLogicalMethodInfo );
   Console::WriteLine( "\nThe declaring type of the method {0} is :\n", myLogicalMethodInfo->Name );
   Console::WriteLine( "\t {0}", myLogicalMethodInfo->DeclaringType );
   Console::WriteLine( "\nThe parameters of the method {0} are :\n", myLogicalMethodInfo->Name );
   array<ParameterInfo^>^myParameters = myLogicalMethodInfo->Parameters;
   for ( int i = 0; i < myParameters->Length; i++ )
   {
      Console::WriteLine( "\t {0}", String::Concat( myParameters[ i ]->Name, " : ", myParameters[ i ]->ParameterType ) );
   }
   Console::WriteLine( "\nThe return type of the method {0} is :\n", myLogicalMethodInfo->Name );
   Console::WriteLine( "\t {0}", myLogicalMethodInfo->ReturnType );
   MyService^ service = gcnew MyService;
   Console::WriteLine( "\nInvoking the method {0}\n", myLogicalMethodInfo->Name );
   array<Object^>^values = gcnew array<Object^>(2);
   values[ 0 ] = 10;
   values[ 1 ] = 10;
   Console::WriteLine( "\tThe sum of 10 and 10 is : {0}", myLogicalMethodInfo->Invoke( service, values ) );
}

using System;
using System.Reflection;
using System.Security.Permissions;
using System.Web.Services.Protocols;

public class MyService
{
   public int Add(int xValue, int yValue)
   {
      return (xValue + yValue);
   }
}

class LogicalMethodInfo_Constructor
{
   [PermissionSetAttribute(SecurityAction.Demand, Name="FullTrust")]
   static void Run()
   {
      Type myType = typeof(MyService);
      MethodInfo myMethodInfo = myType.GetMethod("Add");
      LogicalMethodInfo myLogicalMethodInfo =
                  new LogicalMethodInfo(myMethodInfo);

      Console.WriteLine("\nPrinting properties of method : {0}\n",
                              myLogicalMethodInfo.ToString());

      Console.WriteLine("\nThe declaring type of the method {0} is :\n",
                              myLogicalMethodInfo.Name);
      Console.WriteLine("\t" + myLogicalMethodInfo.DeclaringType);

      Console.WriteLine("\nThe parameters of the method {0} are :\n",
                              myLogicalMethodInfo.Name);
      ParameterInfo[] myParameters = myLogicalMethodInfo.Parameters;
      for(int i = 0; i < myParameters.Length; i++)
      {
         Console.WriteLine("\t" + myParameters[i].Name +
                                 " : " + myParameters[i].ParameterType);
      }

      Console.WriteLine("\nThe return type of the method {0} is :\n",
                              myLogicalMethodInfo.Name);
      Console.WriteLine("\t" + myLogicalMethodInfo.ReturnType);

      MyService service = new MyService();
      Console.WriteLine("\nInvoking the method {0}\n",
                              myLogicalMethodInfo.Name);
      Console.WriteLine("\tThe sum of 10 and 10 is : {0}",
                              myLogicalMethodInfo.Invoke(service,
                                                   new object[] {10, 10}));
   }

   static void Main()
   {
      Run();
   }
}

Imports System.Reflection
Imports System.Security.Permissions
Imports System.Web.Services.Protocols

Public Class MyService
   
   Public Function Add(xValue As Integer, yValue As Integer) As Integer
      Return xValue + yValue
   End Function 'Add
End Class

Class LogicalMethodInfo_Constructor

<PermissionSetAttribute(SecurityAction.Demand, Name := "FullTrust")>  _
   Shared Sub Run()
      Dim myType As Type = GetType(MyService)
      Dim myMethodInfo As MethodInfo = myType.GetMethod("Add")
      Dim myLogicalMethodInfo As New LogicalMethodInfo(myMethodInfo)
      
      Console.WriteLine(ControlChars.NewLine + "Printing properties of method : {0}" + _
                              ControlChars.NewLine, myLogicalMethodInfo.ToString())
      
      Console.WriteLine(ControlChars.NewLine + "The declaring type of the method {0} is :" + _
                                    ControlChars.NewLine, myLogicalMethodInfo.Name)
      Console.WriteLine(ControlChars.Tab + myLogicalMethodInfo.DeclaringType.ToString())
      
      Console.WriteLine(ControlChars.NewLine + "The parameters of the method {0} are :" + _
                                    ControlChars.NewLine, myLogicalMethodInfo.Name)
      Dim myParameters As ParameterInfo() = myLogicalMethodInfo.Parameters
      Dim i As Integer
      For i = 0 To myParameters.Length - 1
         Console.WriteLine(ControlChars.Tab + myParameters(i).Name + " : " + _
                                                      myParameters(i).ParameterType.ToString())
      Next i
      
      Console.WriteLine(ControlChars.NewLine + "The return type of the method {0} is :" + _
                                             ControlChars.NewLine, myLogicalMethodInfo.Name)
      Console.WriteLine(ControlChars.Tab + myLogicalMethodInfo.ReturnType.ToString())
      
      Dim service As New MyService()
      Console.WriteLine(ControlChars.NewLine + "Invoking the method {0}" + _
                                                ControlChars.NewLine, myLogicalMethodInfo.Name)
      Console.WriteLine(ControlChars.Tab + "The sum of 10 and 10 is : {0}", _
                                    myLogicalMethodInfo.Invoke(service, New Object() {10, 10}))

   End Sub
   
   Shared Sub Main()
      Run()
   End Sub
End Class

Applies to

Del via