How to start a button Click an event in code under user control?

Question

Can I run the Click button in code that is under user control?

Answer 1

In C # events, only a class declaring them can be called. In the case of a button, there is a method called OnClick that calls ClickEvent, but it is protected. So you need to declare a class that inherits from Button and change the visibility of the OnClick method (or declare some method that calls base.OnClick)

public class MyButton : Button
{
    public new void OnClick()
    {
        base.OnClick();
    }
}

XAML example

<StackPanel Background="White" >
    <my:MyButton x:Name="TestButton" Click="HandleClick" Content="Test" />
    <TextBlock x:Name="Result" />
</StackPanel>

And the code behind:

public partial class MainPage : UserControl
{
    public MainPage()
    {
        InitializeComponent();
        new Timer(TimerCall,null,0,1000);
    }

    private void TimerCall(object state)
    {
        Dispatcher.BeginInvoke(()=>TestButton.OnClick());
    }

    private void HandleClick(object sender, RoutedEventArgs e)
    {
        Result.Text = String.Format("Clicked on {0:HH:mm:ss}",DateTime.Now);
    }
}

Although it is always easier to call an event handler.

HandleClick(this,null)

Then there is no need for additional plumbing.