Class CommandBase

Base class for MCART implementations of the ICommand interface.

Inheritance
object
CommandBase
ObservingCommand
SimpleCommand
Implements
Inherited Members
Namespace: TheXDS.MCART.Types.Base
Assembly: MCART.Mvvm.dll
Syntax
public abstract class CommandBase : ICommand

Constructors

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CommandBase(Action<object?>)

Base class for MCART implementations of the ICommand interface.

Declaration
protected CommandBase(Action<object?> action)
Parameters
Type Name Description
Action<object> action

Action to associate with this command.

Methods

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CanExecute()

Determines whether the command can execute in its current state.

Declaration
public bool CanExecute()
Returns
Type Description
bool

true if this command can execute; otherwise, false.
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CanExecute(object?)

Determines whether the command can execute in its current state.

Declaration
public abstract bool CanExecute(object? parameter)
Parameters
Type Name Description
object parameter

Data used by the command. If the command does not require data, this object can be set to null.
Returns
Type Description
bool

true if this command can execute; otherwise, false.
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Execute()

Executes the action associated with this command.

Declaration
public void Execute()
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Execute(object?)

Executes the action associated with this command.

Declaration
public virtual void Execute(object? parameter)
Parameters
Type Name Description
object parameter

Data used by the command. If the command does not require data, this object can be set to null.
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RaiseCanExecuteChanged()

Raises the CanExecuteChanged event.

Declaration
protected void RaiseCanExecuteChanged()
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TryExecute()

Checks whether the action can execute and, if so, executes it.

Declaration
public bool TryExecute()
Returns
Type Description
bool

true if the action was executed after checking; otherwise, false.
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TryExecute(object?)

Checks whether the action can execute and, if so, executes it.

Declaration
public bool TryExecute(object? arg)
Parameters
Type Name Description
object arg

Argument to use both for the check and for executing the action.
Returns
Type Description
bool

true if the action was executed after checking; otherwise, false.

Events

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CanExecuteChanged

Raised when changes occur that affect whether the command should execute.

Declaration
public event EventHandler? CanExecuteChanged
Event Type
Type Description
EventHandler

Implements

Extension Methods