I have a window with 2 buttons and a slider. button1 creates a new window and the button2 changes the slider value of the new window. But slider display not updated when button2 is clicked. What is wrong?
public Window1 newWindow1;
public MainWindow()
{
InitializeComponent();
}
private void Button1_Click(object sender, RoutedEventArgs e)
{
Window1 newWindow1 = new Window1();
newWindow1.Show();
newWindow1.mySlider.Value = 20;
}
private void Button2_Click(object sender, RoutedEventArgs e)
{
newWindow1.mySlider.Value = 10;
}
CodePudding user response:
In Button1_Click
you are creating a local instance of the window instead using the field.
Change your code like this.
private void Button1_Click(object sender, RoutedEventArgs e)
{
newWindow1 = new Window1();
newWindow1.Show();
newWindow1.mySlider.Value = 20;
}
But I hardy recommend following the MVVM pattern when using WPF.