wpf app类内容

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;

namespace WpfApplication1
{
/// <summary>
/// App.xaml 的交互逻辑
/// </summary>
public partial class App : Application
{
private bool unsaveData = false;
public bool UnsaveData { get{ return unsaveData;} set{ unsaveData=value;} }
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
UnsaveData = true;
}
protected override void OnSessionEnding(SessionEndingCancelEventArgs e)
{
base.OnSessionEnding(e);
if (UnsaveData)
{
e.Cancel = true;
MessageBox.Show("The application attempted to be closed as a result of" + e.ReasonSessionEnding.ToString() + ".The is not allowed,as you have unsave data.");
}
}
[STAThread()]
public static void Main()
{
SplashScreen splashScreen = new SplashScreen("images/f5638d4bbfdbf2d5s.jpg");
splashScreen.Show(true);
WpfApplication1.App app = new WpfApplication1.App();
app.InitializeComponent();
app.Run();
}
public void InitializeComponet()
{
this.StartupUri = new Uri("WpfApplication1.xaml", System.UriKind.Relative);
}
}
}