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Showing posts with label command. Show all posts
Showing posts with label command. Show all posts

Sunday, September 7, 2014

WPF Save command

What can be easier then type

In WPF it is a designed way to interact with user. It is much simpler then binding to events as it gives you a better flexibility with CanExecute property and you code becomes reusable.

I wanted to implement that command and checked google. I was surprised to find that there were not any direct explanation in first 2-3 results. Even more, MSDN has a really bad explanation of what that command is and as an example there is a source code for Paste command. I am not sure why :)

So just in case - if you want to bind Save command you can CommandBinding to your own handlers like this:

XAML

    
        
        
    
    
        
        
    


C#
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void SaveCommand_CanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            e.CanExecute = true; //your logic
        }

        private void SaveCommand_OnExecuted(object sender, ExecutedRoutedEventArgs e)
        {
            MessageBox.Show("Save!");
        }

        private void OpenCommand_CanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            e.CanExecute = true;
        }

        private void OpenCommand_OnExecuted(object sender, ExecutedRoutedEventArgs e)
        {
            MessageBox.Show("Open");
        }
    }