button1.PerformClick() in wpf

Question

Why this code in WPF does not work ?

private void button1_Click(object sender, EventArgs e)
    {
        MessageBox.Show(\"yes\");
    }
    pr         


        

Answer 1

Good practice in WPF is using commands. It improves testability and separates UI and business logic.

First you may try RoutedUICommand.

In code behind file we have to define RoutedClickCommand and Execute|CanExecute handlers:

    public static ICommand RoutedClickCommand = new RoutedUICommand("ClickCommand", "ClickCommand", typeof(MainWindow));

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

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

So, when you need button logic ("button1.PerformClick();" in your sample), just put next line:

MainWindow.RoutedClickCommand.Execute(null);

As for me, I preffer another way which supposes carry command into presentation model. Composite Application Library (Prism) helps me with its DelegateCommand class. Then command definition in presentation model looks like:

    private DelegateCommand