dotnet core web api exception handling

Question

The Main method in Program.cs in my dotnet core web api project has the following code.

public static void Main(string[] args)
{
    var logger = LogManager.LoadConfiguration("nlog.config").GetCurrentClassLogger();
    try
    {
        BuildWebHost(args).Run();
    }
    catch (Exception ex)
    {
        //NLog: catch setup errors
        logger.Error(ex, "An exception occurred during application start.");
        throw;
    }
}    

I also setup an exception handling middleware like this:

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseResponseCompression();
    app.UseMiddleware(typeof(HandleExceptionMiddleware));
    app.UseMvc();
}

Should I also add a AppDomain.CurrentDomain.UnhandledException ? to the Main method - since dotnet core web api is a console application?. Do I lose/gain any chances of trapping exceptions without this?

Answer 1

By adding try/catch in Program.cs you will end up catching app's start-up exceptions which i don't believe you should handle those exceptions because in any case if your app is not able to start so what will be the point . Regarding to the App domain exception handling the answer is no , you don't need to handle them due to dotnet core built-in exception handling as mentioned in the document any exception that your app is not handling is being handled by the dotnet itself . In short , let the app have a clean start-up and let it throw it's exceptions and then you can always check the dotnet run 's console for any exceptions .