Command Class
Definition
Important
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Defines an System.Windows.Input.ICommand implementation that wraps a System.Action.
public class Command : System.Windows.Input.ICommand
type Command = class
interface ICommand
- Inheritance
-
System.ObjectCommand
- Derived
- Implements
-
System.Windows.Input.ICommand
Remarks
The following example creates a new Command and set it to a button.
var command = new Command (() => Debug.WriteLine ("Command executed"));
var button = new Button {
Text = "Hit me to execute the command",
Command = command,
};
More useful scenarios takes a parameter
var command = new Command (o => Debug.WriteLine ("Command executed: {0}", o));
var button = new Button {
Text = "Hit me to execute the command",
Command = command,
CommandParameter = "button0",
};
Constructors
Command(Action) |
Initializes a new instance of the Command class. |
Command(Action, Func<Boolean>) |
Initializes a new instance of the Command class. |
Command(Action<Object>) |
Initializes a new instance of the Command class. |
Command(Action<Object>, Func<Object,Boolean>) |
Initializes a new instance of the Command class. |
Methods
CanExecute(Object) |
Returns a System.Boolean indicating if the Command can be exectued with the given parameter. |
ChangeCanExecute() |
Send a System.Windows.Input.ICommand.CanExecuteChanged |
Execute(Object) |
Invokes the execute Action |
Events
CanExecuteChanged |
Occurs when the target of the Command should reevaluate whether or not the Command can be executed. |