Class AsyncDelegateCommand

The AsyncDelegateCommand allows use the ICommand interface with asynchronous functionality. While the underlying asynchronous functionality is running CanExecute(object) always returns false and CanExecuteChanged is automatically called when execution starts and ends.

potential exceptions occurring during execution are automatically dispatched into the UI thread.

Inheritance

object

AsyncDelegateCommandBase

AsyncDelegateCommand

Implements

IAsyncDelegateCommand

ICommand

Inherited Members

AsyncDelegateCommandBase.CanExecuteChanged

AsyncDelegateCommandBase.RaiseCanExecuteChanged()

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Sartorius.SAF.Presentation.Commands

Assembly: Sartorius.SAF.Presentation.dll

Syntax

public sealed class AsyncDelegateCommand : AsyncDelegateCommandBase, IAsyncDelegateCommand, ICommand

Examples

The following example shows how to use the AsyncDelegateCommand.

Constructors

AsyncDelegateCommand(Func<Task>)

Creates a new instance of the AsyncDelegateCommand class with the specified async execution function.

Declaration

public AsyncDelegateCommand(Func<Task> executeFunc)

Parameters

Type	Name	Description
Func<Task>	executeFunc	The asynchronous function that this command should execute.

AsyncDelegateCommand(Func<Task>, Func<bool>)

Creates a new instance of the AsyncDelegateCommand class with the specified async execution function and can execute function.

Declaration

public AsyncDelegateCommand(Func<Task> executeFunc, Func<bool> canExecute)

Parameters

Type	Name	Description
Func<Task>	executeFunc	The asynchronous function that this command should execute.
Func<bool>	canExecute	The function that verifies whether the command can execute in its current state.

Methods

CanExecute()

Defines the method that determines whether the command can execute in its current state.

Declaration

public bool CanExecute()

Returns

Type	Description
bool	true, if this command can be executed; otherwise, false.

Execute()

Defines the method to be called when the command is invoked.

Declaration

public Task Execute()

Returns

Type	Description
Task	The task object representing the asynchronous operation.

Implements

IAsyncDelegateCommand

ICommand

Extension Methods

CollectionExtensions.AddRange<T, TCollection>(TCollection, IEnumerable<T>)

SerializableObjectCloneExtension.Clone<T>(T)

See Also

IAsyncDelegateCommand