Dispatcher.InvokeAsync Method
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Executes the specified delegate asynchronously on the thread the Dispatcher is associated with.
| InvokeAsync(Action) |
Executes the specified Action asynchronously on the thread the Dispatcher is associated with. |
| InvokeAsync(Action, DispatcherPriority) |
Executes the specified Action asynchronously at the specified priority on the thread the Dispatcher is associated with. |
| InvokeAsync(Action, DispatcherPriority, CancellationToken) |
Executes the specified Action asynchronously at the specified priority on the thread the Dispatcher is associated with. |
| InvokeAsync<TResult>(Func<TResult>, DispatcherPriority, CancellationToken) |
Executes the specified Func<TResult> asynchronously at the specified priority on the thread the Dispatcher is associated with. |
| InvokeAsync<TResult>(Func<TResult>) |
Executes the specified Func<TResult> asynchronously on the thread the Dispatcher is associated with. |
| InvokeAsync<TResult>(Func<TResult>, DispatcherPriority) |
Executes the specified Func<TResult> asynchronously at the specified priority on the thread the Dispatcher is associated with. |
Executes the specified Action asynchronously on the thread the Dispatcher is associated with.
public:
System::Windows::Threading::DispatcherOperation ^ InvokeAsync(Action ^ callback);public System.Windows.Threading.DispatcherOperation InvokeAsync(Action callback);member this.InvokeAsync : Action -> System.Windows.Threading.DispatcherOperationPublic Function InvokeAsync (callback As Action) As DispatcherOperationParameters
- callback
- Action
A delegate to invoke through the dispatcher.
Returns
An object, which is returned immediately after InvokeAsync(Action) is called, that can be used to interact with the delegate as it is pending execution in the event queue.
Remarks
The default priority is DispatcherPriority.Normal.
This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by Invoke(Action).
Applies to
.NET Framework 4.8.1 a ďalšie verzie
| Produkt | Verzie |
|---|---|
| .NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9, 10 |
Executes the specified Action asynchronously at the specified priority on the thread the Dispatcher is associated with.
public:
System::Windows::Threading::DispatcherOperation ^ InvokeAsync(Action ^ callback, System::Windows::Threading::DispatcherPriority priority);public System.Windows.Threading.DispatcherOperation InvokeAsync(Action callback, System.Windows.Threading.DispatcherPriority priority);member this.InvokeAsync : Action * System.Windows.Threading.DispatcherPriority -> System.Windows.Threading.DispatcherOperationPublic Function InvokeAsync (callback As Action, priority As DispatcherPriority) As DispatcherOperationParameters
- callback
- Action
A delegate to invoke through the dispatcher.
- priority
- DispatcherPriority
The priority that determines the order in which the specified callback is invoked relative to the other pending operations in the Dispatcher.
Returns
An object, which is returned immediately after InvokeAsync(Action, DispatcherPriority) is called, that can be used to interact with the delegate as it is pending execution in the event queue.
Remarks
This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by Invoke(Action, DispatcherPriority).
Applies to
.NET Framework 4.8.1 a ďalšie verzie
| Produkt | Verzie |
|---|---|
| .NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9, 10 |
Executes the specified Action asynchronously at the specified priority on the thread the Dispatcher is associated with.
public:
System::Windows::Threading::DispatcherOperation ^ InvokeAsync(Action ^ callback, System::Windows::Threading::DispatcherPriority priority, System::Threading::CancellationToken cancellationToken);public System.Windows.Threading.DispatcherOperation InvokeAsync(Action callback, System.Windows.Threading.DispatcherPriority priority, System.Threading.CancellationToken cancellationToken);member this.InvokeAsync : Action * System.Windows.Threading.DispatcherPriority * System.Threading.CancellationToken -> System.Windows.Threading.DispatcherOperationPublic Function InvokeAsync (callback As Action, priority As DispatcherPriority, cancellationToken As CancellationToken) As DispatcherOperationParameters
- callback
- Action
A delegate to invoke through the dispatcher.
- priority
- DispatcherPriority
The priority that determines the order in which the specified callback is invoked relative to the other pending operations in the Dispatcher.
- cancellationToken
- CancellationToken
An object that indicates whether to cancel the action.
Returns
An object, which is returned immediately after InvokeAsync(Action, DispatcherPriority, CancellationToken) is called, that can be used to interact with the delegate as it is pending execution in the event queue.
Exceptions
The cancellation token was canceled. This exception is stored into the returned task.
Remarks
This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by Invoke(Action, DispatcherPriority).
Applies to
.NET Framework 4.8.1 a ďalšie verzie
| Produkt | Verzie |
|---|---|
| .NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9, 10 |
Executes the specified Func<TResult> asynchronously at the specified priority on the thread the Dispatcher is associated with.
public:
generic <typename TResult>
System::Windows::Threading::DispatcherOperation<TResult> ^ InvokeAsync(Func<TResult> ^ callback, System::Windows::Threading::DispatcherPriority priority, System::Threading::CancellationToken cancellationToken);public System.Windows.Threading.DispatcherOperation<TResult> InvokeAsync<TResult>(Func<TResult> callback, System.Windows.Threading.DispatcherPriority priority, System.Threading.CancellationToken cancellationToken);member this.InvokeAsync : Func<'Result> * System.Windows.Threading.DispatcherPriority * System.Threading.CancellationToken -> System.Windows.Threading.DispatcherOperation<'Result>Public Function InvokeAsync(Of TResult) (callback As Func(Of TResult), priority As DispatcherPriority, cancellationToken As CancellationToken) As DispatcherOperation(Of TResult)Type Parameters
- TResult
The return value type of the specified delegate.
Parameters
- callback
- Func<TResult>
A delegate to invoke through the dispatcher.
- priority
- DispatcherPriority
The priority that determines the order in which the specified callback is invoked relative to the other pending operations in the Dispatcher.
- cancellationToken
- CancellationToken
An object that indicates whether to cancel the operation.
Returns
An object, which is returned immediately after InvokeAsync<TResult>(Func<TResult>, DispatcherPriority, CancellationToken) is called, that can be used to interact with the delegate as it is pending execution in the event queue.
Exceptions
The cancellation token was canceled. This exception is stored into the returned task.
Applies to
.NET Framework 4.8.1 a ďalšie verzie
| Produkt | Verzie |
|---|---|
| .NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9, 10 |
Executes the specified Func<TResult> asynchronously on the thread the Dispatcher is associated with.
public:
generic <typename TResult>
System::Windows::Threading::DispatcherOperation<TResult> ^ InvokeAsync(Func<TResult> ^ callback);public System.Windows.Threading.DispatcherOperation<TResult> InvokeAsync<TResult>(Func<TResult> callback);member this.InvokeAsync : Func<'Result> -> System.Windows.Threading.DispatcherOperation<'Result>Public Function InvokeAsync(Of TResult) (callback As Func(Of TResult)) As DispatcherOperation(Of TResult)Type Parameters
- TResult
The return value type of the specified delegate.
Parameters
- callback
- Func<TResult>
A delegate to invoke through the dispatcher.
Returns
An object, which is returned immediately after InvokeAsync<TResult>(Func<TResult>) is called, that can be used to interact with the delegate as it is pending execution in the event queue.
Applies to
.NET Framework 4.8.1 a ďalšie verzie
| Produkt | Verzie |
|---|---|
| .NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9, 10 |
Executes the specified Func<TResult> asynchronously at the specified priority on the thread the Dispatcher is associated with.
public:
generic <typename TResult>
System::Windows::Threading::DispatcherOperation<TResult> ^ InvokeAsync(Func<TResult> ^ callback, System::Windows::Threading::DispatcherPriority priority);public System.Windows.Threading.DispatcherOperation<TResult> InvokeAsync<TResult>(Func<TResult> callback, System.Windows.Threading.DispatcherPriority priority);member this.InvokeAsync : Func<'Result> * System.Windows.Threading.DispatcherPriority -> System.Windows.Threading.DispatcherOperation<'Result>Public Function InvokeAsync(Of TResult) (callback As Func(Of TResult), priority As DispatcherPriority) As DispatcherOperation(Of TResult)Type Parameters
- TResult
The return value type of the specified delegate.
Parameters
- callback
- Func<TResult>
A delegate to invoke through the dispatcher.
- priority
- DispatcherPriority
The priority that determines the order in which the specified callback is invoked relative to the other pending operations in the Dispatcher.
Returns
An object, which is returned immediately after InvokeAsync<TResult>(Func<TResult>, DispatcherPriority) is called, that can be used to interact with the delegate as it is pending execution in the event queue.
Applies to
.NET Framework 4.8.1 a ďalšie verzie
| Produkt | Verzie |
|---|---|
| .NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9, 10 |
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