Run WPF application (.NET 5) outside Visual Studio

Question

Run WPF application (.NET 5) outside Visual Studio

Jalza 781

I developed a desktop application using WPF and .NET 5. If I run it from Visual Studio 2019, everything works without problems.

My app uses a library to manage video cameras (it is added as an Assembly) and 3 nuget packages (MvvmLightStd10, Newtonsoft.Json and System.Drawing.Common).

Now I need to deploy the application on another computer as an .exe file. I follow these steps:

Right click on project.
Select Publish.
Folder > Next > Folder.
I set the location I want to use.
Click on Finish button.
Click on Show all settings in the new profile

I chose this configuration:

After publish, I get the .exe file, it's .pdb file and library's (video cameras) .xml file in the specified folder.

If I double click on .exe file the application runs, but the window is not displayed. I know the application runs because I create a default setting JSON file at start, and it is created.

There is no error messages, so I don't know what is happening. Do you have any idea?

Viorel 122.6K Reputation points

2021-10-08T21:36:14.1+00:00

Do you think that it is terminated (i.e. it is not displayed by Task Manager)?

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Viorel 122.6K Reputation points

2021-10-08T21:36:14.1+00:00

Do you think that it is terminated (i.e. it is not displayed by Task Manager)?

Answer 1

Karen Payne MVP 35,586 Volunteer Moderator

Consider Application.DispatcherUnhandledException Event and write to a log file. If you need an idea on how to log see my repo.

Jalza 781

Thank you for answer @Karen Payne MVP this is my App.xaml.cs file:

public partial class App : Application  
{  
    public static Settings Settings { get; set; }  

    public App()  
    {  
        this.DispatcherUnhandledException += this.App_DispatcherUnhandledException;  
        try  
        {  
            App.Settings = new Settings();  
            App.Settings.Load(); // this creates default settings.json file if does not exist  
        }  
        catch (Exception exception)  
        {  
            this.SaveException(exception);  
            App.Current.Shutdown();  
        }  
    }  

    private void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)  
    {  
        this.SaveException(e.Exception);  
    }  

    private void SaveException(Exception exception)  
    {  
        string text = $"{exception.Message}{Environment.NewLine}{exception.StackTrace}";  
        File.WriteAllText("error.txt", text);  
    }  
}

No error.txt file is written.

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Run WPF application (.NET 5) outside Visual Studio

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