AsyncCommand

AsyncCommand

public AsyncCommand(Func<T, CancellationToken, Task> execute, Func<T, bool> canExecute, bool allowMultipleExecution)

asyncCommand = AsyncCommand(execute, canExecute, allowMultipleExecution)

Creates a new async command.

execute

The async execution logic.

canExecute

The execution status logic.

allowMultipleExecution

Allow multiple concurrent executions.

AsyncCommand

public AsyncCommand(Func<T, Task> execute, Func<T, bool> canExecute, bool allowMultipleExecution)

asyncCommand = AsyncCommand(execute, canExecute, allowMultipleExecution)

Creates a new async command without cancellation support.

execute

The async execution logic.

canExecute

The execution status logic.

allowMultipleExecution

Allow multiple concurrent executions.

CancelCommand

public IRevalidatableCommand CancelCommand { get; }

value = asyncCommand.CancelCommand

Gets the command to cancel the current execution.

IsCancellationRequested

public bool IsCancellationRequested { get; }

value = asyncCommand.IsCancellationRequested

Gets whether cancellation has been requested.

IsExecuting

public bool IsExecuting { get; private set; }

value = asyncCommand.IsExecuting
asyncCommand.IsExecuting = value

Gets whether the command is currently executing.

Cancel

public void Cancel()

asyncCommand.Cancel()

Cancels the current execution.

CanExecute

public bool CanExecute(object parameter)

result = asyncCommand.CanExecute(parameter)

Dispose

public void Dispose()

asyncCommand.Dispose()

Disposes the command and cancels any pending operation.

Dispose

protected virtual void Dispose(bool disposing)

asyncCommand.Dispose(disposing)

Disposes the command resources.

disposing

True if disposing managed resources.

Execute

public void Execute(object parameter)

asyncCommand.Execute(parameter)

ExecuteAsync

public Task ExecuteAsync(T parameter)

result = asyncCommand.ExecuteAsync(parameter)

Executes the command asynchronously.

parameter

The command parameter.

返回值: A task representing the async operation.

RaiseCanExecuteChanged

public void RaiseCanExecuteChanged()

asyncCommand.RaiseCanExecuteChanged()

Invoke CanExecuteChanged event.

CanExecuteChanged

public event EventHandler CanExecuteChanged

asyncCommand.CanExecuteChanged += handler