Thread.GetApartmentState Método

Definição

Retorna um valor ApartmentState que indica o estado do apartment.Returns an ApartmentState value indicating the apartment state.

public:
 System::Threading::ApartmentState GetApartmentState();
public System.Threading.ApartmentState GetApartmentState ();
member this.GetApartmentState : unit -> System.Threading.ApartmentState
Public Function GetApartmentState () As ApartmentState

Retornos

Um dos valores ApartmentState que indica o estado do apartment do thread gerenciado.One of the ApartmentState values indicating the apartment state of the managed thread. O padrão é Unknown.The default is Unknown.

Exemplos

O exemplo de código a seguir demonstra os métodos GetApartmentState, SetApartmentState e TrySetApartmentState.The following code example demonstrates the GetApartmentState, SetApartmentState, and TrySetApartmentState methods. O exemplo de código cria um thread.The code example creates a thread. Antes de o thread ser iniciado, GetApartmentState exibe o estado de ApartmentState.Unknown inicial e SetApartmentState altera o estado para ApartmentState.STA.Before the thread is started, GetApartmentState displays the initial ApartmentState.Unknown state and SetApartmentState changes the state to ApartmentState.STA. Em seguida, o método TrySetApartmentState retorna false ao tentar alterar o estado para ApartmentState.MTA porque o estado de apartamento já está definido.The TrySetApartmentState method then returns false when attempting to change the state to ApartmentState.MTA because the apartment state is already set. Se a mesma operação tiver sido tentada com SetApartmentState, InvalidOperationException teria sido lançada.If the same operation had been attempted with SetApartmentState, InvalidOperationException would have been thrown.

Depois que o thread é iniciado, o método TrySetApartmentState é usado novamente.After the thread is started, the TrySetApartmentState method is used again. Desta vez, ele gera ThreadStateException porque o thread já foi iniciado.This time it throws ThreadStateException because the thread has already been started.

using namespace System;
using namespace System::Threading;

void ThreadProc()
{
    Thread::Sleep(2000);
};

void main()
{
    Thread^ t = gcnew Thread(gcnew ThreadStart(ThreadProc));
    Console::WriteLine("Before setting apartment state: {0}", 
            t->GetApartmentState());

    t->SetApartmentState(ApartmentState::STA);
    Console::WriteLine("After setting apartment state: {0}", 
        t->GetApartmentState());

    bool result = t->TrySetApartmentState(ApartmentState::MTA);
    Console::WriteLine("Try to change state: {0}", result);

    t->Start();

    Thread::Sleep(500);

    try
    {
        t->TrySetApartmentState(ApartmentState::STA);
    }
    catch (ThreadStateException^)
    {
        Console::WriteLine("ThreadStateException occurs " +
            "if apartment state is set after starting thread.");
    }

    t->Join();
}

/* This code example produces the following output:

Before setting apartment state: Unknown
After setting apartment state: STA
Try to change state: False
ThreadStateException occurs if apartment state is set after starting thread.
 */
using System;
using System.Threading;

class Example
{
    public static void Main()
    {
        Thread t = new Thread(ThreadProc);
        Console.WriteLine("Before setting apartment state: {0}", 
            t.GetApartmentState());

        t.SetApartmentState(ApartmentState.STA);
        Console.WriteLine("After setting apartment state: {0}", 
            t.GetApartmentState());

        bool result = t.TrySetApartmentState(ApartmentState.MTA);
        Console.WriteLine("Try to change state: {0}", result);

        t.Start();

        Thread.Sleep(500);

        try
        {
            t.TrySetApartmentState(ApartmentState.STA);
        }
        catch (ThreadStateException)
        {
            Console.WriteLine("ThreadStateException occurs " +
                "if apartment state is set after starting thread.");
        }

        t.Join();
    }

    public static void ThreadProc()
    {
        Thread.Sleep(2000);
    }
}

/* This code example produces the following output:

Before setting apartment state: Unknown
After setting apartment state: STA
Try to change state: False
ThreadStateException occurs if apartment state is set after starting thread.
 */
Imports System.Threading

Module Example

    Sub Main()
 
        Dim t As New Thread(AddressOf ThreadProc)
        Console.WriteLine("Before setting apartment state: {0}", _
            t.GetApartmentState())

        t.SetApartmentState(ApartmentState.STA)
        Console.WriteLine("After setting apartment state: {0}", _
            t.GetApartmentState())

        Dim result As Boolean = _
            t.TrySetApartmentState(ApartmentState.MTA)
        Console.WriteLine("Try to change state: {0}", result)

        t.Start()

        Thread.Sleep(500)

        Try
            t.TrySetApartmentState(ApartmentState.STA)
        Catch ex As ThreadStateException
            Console.WriteLine("ThreadStateException occurs " & _
                "if apartment state is set after starting thread.")
        End Try

        t.Join()
    End Sub

    Sub ThreadProc()
        Thread.Sleep(2000)
    End Sub
End Module

' This code example produces the following output:
'
'Before setting apartment state: Unknown
'After setting apartment state: STA
'Try to change state: False
'ThreadStateException occurs if apartment state is set after starting thread.

Comentários

Esse método, juntamente com o método SetApartmentState e o método TrySetApartmentState, substitui a propriedade ApartmentState.This method, along with the SetApartmentState method and the TrySetApartmentState method, replaces the ApartmentState property.

Aplica-se a