41 lines
1.1 KiB
C#
41 lines
1.1 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 ImageCatalog_2.Commands;
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public class RelayCommand : System.Windows.Input.ICommand
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{
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private readonly Action<object> _execute;
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private readonly Predicate<object> _canExecute;
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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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_execute = execute ?? throw new ArgumentNullException(nameof(execute));
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_canExecute = canExecute;
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}
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// Manually raise this event in WinForms as CommandManager is unavailable
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public event EventHandler CanExecuteChanged;
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public bool CanExecute(object parameter)
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{
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return _canExecute == null || _canExecute(parameter);
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}
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public void Execute(object parameter)
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{
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_execute(parameter);
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}
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// Method to manually raise CanExecuteChanged event
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public void RaiseCanExecuteChanged()
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{
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CanExecuteChanged?.Invoke(this, EventArgs.Empty);
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}
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}
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