Check Exception type for DispatcherUnhandledException : Exception « Windows Presentation Foundation « C# / C Sharp

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C# / C Sharp » Windows Presentation Foundation » ExceptionScreenshots 
Check Exception type for DispatcherUnhandledException
  
<Application 
    x:Class="DispatcherUnhandledExceptionSample.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    StartupUri="MainWindow.xaml" 
    DispatcherUnhandledException="App_DispatcherUnhandledException" />

//File:Window.xaml.cs
using System;
using System.Diagnostics;
using System.Windows;
using System.Data;
using System.Xml;
using System.Configuration;
using System.Windows.Threading;

namespace DispatcherUnhandledExceptionSample
{
    public partial class App : Application
    {
        void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
        {
            bool shutdown = false;

            if (e.Exception is DivideByZeroException)
            {
                shutdown = false;
            }
            else if (e.Exception is ArgumentNullException)
            {
                shutdown = true;
            }

            if (shutdown)
            {
                MessageBoxResult result = MessageBox.Show("Application must exit:\n\n" + e.Exception.Message + "\n\nSave before exit?""app", MessageBoxButton.YesNo, MessageBoxImage.Error);
                if (result == MessageBoxResult.Yes)
                {
                }
                EventLog.WriteEntry("app""Unrecoverable Exception: " + e.Exception.Message, EventLogEntryType.Error);
                this.Shutdown(-1);
            }
            e.Handled = true;
        }
    }
}

   
    
  
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