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//<Snippet1>
using namespace System;
using namespace System::Threading;
using namespace System::Runtime::InteropServices;
namespace Examples {
namespace AdvancedProgramming {
namespace AsynchronousOperations
{
public ref class AsyncDemo
{
public:
// The method to be executed asynchronously.
String^ TestMethod(int callDuration, [OutAttribute] int% threadId)
{
Console::WriteLine("Test method begins.");
Thread::Sleep(callDuration);
threadId = Thread::CurrentThread->ManagedThreadId;
return String::Format("My call time was {0}.", callDuration);
}
};
// The delegate must have the same signature as the method
// it will call asynchronously.
public delegate String^ AsyncMethodCaller(int callDuration, [OutAttribute] int% threadId);
}}}
//</Snippet1>