LogicalMethodInfo.AsyncResultParameter Vlastnost
Definice
Důležité
Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.
Získá návratovou Begin
hodnotu asynchronní volání metody.
public:
property System::Reflection::ParameterInfo ^ AsyncResultParameter { System::Reflection::ParameterInfo ^ get(); };
public System.Reflection.ParameterInfo AsyncResultParameter { get; }
member this.AsyncResultParameter : System.Reflection.ParameterInfo
Public ReadOnly Property AsyncResultParameter As ParameterInfo
Hodnota vlastnosti
IAsyncResult Představuje ParameterInfo vrácené voláním Begin
asynchronní metody.
Příklady
#using <System.dll>
#using <System.Web.dll>
#using <System.Web.Services.dll>
#using <System.Xml.dll>
using namespace System;
using namespace System::Reflection;
using namespace System::Web::Services::Protocols;
public ref class MyService: public SoapHttpClientProtocol
{
public:
IAsyncResult^ BeginAdd( int xValue, int yValue, AsyncCallback^ callback, Object^ asyncState )
{
array<Object^>^temp0 = {xValue,yValue};
return this->BeginInvoke( "Add", temp0, callback, asyncState );
}
int EndAdd( System::IAsyncResult^ asyncResult )
{
array<Object^>^results = this->EndInvoke( asyncResult );
return *dynamic_cast<int^>(results[ 0 ]);
}
};
int main()
{
Type^ myType = MyService::typeid;
MethodInfo^ myBeginMethod = myType->GetMethod( "BeginAdd" );
MethodInfo^ myEndMethod = myType->GetMethod( "EndAdd" );
array<MethodInfo^>^temp0 = {myBeginMethod,myEndMethod};
LogicalMethodInfo^ myLogicalMethodInfo = LogicalMethodInfo::Create( temp0, LogicalMethodTypes::Async )[ 0 ];
Console::WriteLine( "\nThe asynchronous callback parameter of method {0} is :\n", myLogicalMethodInfo->Name );
Console::WriteLine( "\t {0} : {1}", myLogicalMethodInfo->AsyncCallbackParameter->Name, myLogicalMethodInfo->AsyncCallbackParameter->ParameterType );
Console::WriteLine( "\nThe asynchronous state parameter of method {0} is :\n", myLogicalMethodInfo->Name );
Console::WriteLine( "\t {0} : {1}", myLogicalMethodInfo->AsyncStateParameter->Name, myLogicalMethodInfo->AsyncStateParameter->ParameterType );
Console::WriteLine( "\nThe asynchronous result parameter of method {0} is :\n", myLogicalMethodInfo->Name );
Console::WriteLine( "\t {0} : {1}", myLogicalMethodInfo->AsyncResultParameter->Name, myLogicalMethodInfo->AsyncResultParameter->ParameterType );
Console::WriteLine( "\nThe begin method of the asynchronous method {0} is :\n", myLogicalMethodInfo->Name );
Console::WriteLine( "\t {0}", myLogicalMethodInfo->BeginMethodInfo );
Console::WriteLine( "\nThe end method of the asynchronous method {0} is :\n", myLogicalMethodInfo->Name );
Console::WriteLine( "\t {0}", myLogicalMethodInfo->EndMethodInfo );
if ( myLogicalMethodInfo->IsAsync )
Console::WriteLine( "\n {0} is asynchronous", myLogicalMethodInfo->Name );
else
Console::WriteLine( "\n {0} is synchronous", myLogicalMethodInfo->Name );
}
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);
}
}
Imports System.Reflection
Imports System.Web.Services.Protocols
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
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
End Class
Poznámky
Vzor asynchronního návrhu v modulu CLR (Common Language Runtime) zahrnuje volání Begin
metody pro spuštění asynchronního vyvolání metody a metodu End
pro dokončení volání. Metoda Begin
obvykle vrací okamžitě s objektem implementovaným IAsyncResult rozhraní, který pak může být předán End
metodě později, aby se dokončilo asynchronní vyvolání metody. Vrácený objekt implementovaný IAsyncResult rozhraní je reprezentován touto vlastností.
Další informace o asynchronním vyvolání webových služeb XML naleznete v tématu Asynchronní komunikace s webovými službami XML.