WPF

cppwxwidgetsss wrote:

xmlns:local= "clr-namespace:lab1"

private bool m_dialogResult;
public bool DialogResult
{
 get
 {
  return this.m_dialogResult;
 }
 set
 {
  // Error here. You never actually set this.m_dialogResult;
 }
}

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">
    <Grid>
        <Button Click="Button_Click">Open Dialog</Button>
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WpfApplication1
{
	/// <summary>
	/// Interaction logic for Window1.xaml
	/// </summary>
	public partial class Window1 : Window
	{
		public Window1()
		{
			InitializeComponent();
			
		}

		private void Button_Click(object sender, RoutedEventArgs e)
		{
			MyTestDialog dialog = new MyTestDialog();
			bool? ret = dialog.ShowDialog();
		}
	}
}

<Window x:Class="WpfApplication1.MyTestDialog"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MyTestDialog" Height="300" Width="300">
    <Grid>
        <Button Click="Button_Click">Click!</Button>
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace WpfApplication1
{
	/// <summary>
	/// Interaction logic for MyTestDialog.xaml
	/// </summary>
	public partial class MyTestDialog : Window
	{
		public MyTestDialog()
		{
			InitializeComponent();
		}

		private void Button_Click(object sender, RoutedEventArgs e)
		{
			this.DialogResult = true;
		}
	}
}

private void Button_Click(object sender, RoutedEventArgs e)		
{			
       MyTestDialog dialog = new MyTestDialog();			
       bool? ret = dialog.ShowDialog();		
       if (ret == true)
       {
           MessageBox.Show("DialogResult returned true!");
       }

}

1. Create a custom control. Let's call this control "StyleChangedControl".
2. StyleChangedControl will expose a custom event, StyleChanged.
3. When a StyleChangedControl constructor is called, it will subscribe itself to the static event, StyleChangedControl.ApplicationStyleChanged. We'll call this new StyleChangedControl "NewStyleChangedControl".
4. When I change the application style, I will call StyleChangedControl.NotifyOfStyleChange() (a static method).
5. NotifyOfStyleChange() will fire the StyleChangedControl.ApplicationStyleChanged event (each NewStyleChangedControl will receive notification of that event).
6. Once NewStyleChangedControl gets notification of the ApplicationStyleChanged event, it will itself raise its own StyleChanged event.
7. In the resource dictionary that declares the style that contains the button, there will be an instance of StyleChangedControl.
8. The button will have an event trigger that is subscribed to that NewStyleChangedControl's StyleChanged event.
9. When that StyleChanged event gets fired, the event trigger will recognize it, and will then initiate an animation. This will accomplish the goal of firing an animation when the application style changes.