40 lines
1.0 KiB
C#
40 lines
1.0 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Input;
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namespace CommandPatternSample.Command
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{
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internal class RelayCommand : ICommand
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{
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private Func<object, bool> _canExecute;
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private Action<object> _executeAction;
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public event EventHandler CanExecuteChanged;
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public RelayCommand(Action<object> executeAction, Func<object, bool> canExeute)
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{
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_executeAction = executeAction ?? throw new ArgumentNullException("Execute action is not null");
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_canExecute = canExeute;
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}
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public RelayCommand(Action<object> executeAction) : this(executeAction, null)
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{
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}
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public bool CanExecute(object parameter)
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{
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bool result = _canExecute == null ? true : _canExecute.Invoke(parameter);
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return result;
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}
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public void Execute(object parameter)
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{
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_executeAction.Invoke(parameter);
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}
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}
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}
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