41 lines
1.3 KiB
C#
41 lines
1.3 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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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 sikFtpClient.ViewModel
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{
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public class RelayCommand : ICommand
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{
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#region Fields
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readonly Action<object> _execute;
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readonly Predicate<object> _canExecute;
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#endregion // Fields
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#region Constructors
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public RelayCommand(Action<object> execute) : this(execute, null) { }
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public RelayCommand(Action<object> execute, Predicate<object> canExecute)
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{
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if (execute == null)
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throw new ArgumentNullException("execute");
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_execute = execute; _canExecute = canExecute;
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}
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#endregion // Constructors
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#region ICommand Members
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[DebuggerStepThrough]
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public bool CanExecute(object parameter)
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{
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return _canExecute == null ? true : _canExecute(parameter);
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}
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public event EventHandler CanExecuteChanged
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{
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add { CommandManager.RequerySuggested += value; }
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remove { CommandManager.RequerySuggested -= value; }
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}
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public void Execute(object parameter) { _execute(parameter); }
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#endregion // ICommand Members
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}
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}
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