ErrorPageOptions in beta6

[manfredk]

After updating the ASP.Net5 WebApp project template to beta6 I have the following issue in Startup.cs:

app.UseErrorPage(ErrorPageOptions.ShowAll);

This line throws 'ErrorPageOptions' does not contain a definition for 'ShowAll'. Any idea, how this is handled in beta6?

[manfredk]

ErrorPageOptions still live in Diagnostics, so I checked it in Object Viewer but couldn't find "ShowAll".

After reading the intellisense description I solved the problem with:

app.Properties["host.AppMode"] = "development";
app.UseErrorPage();

This worked and seems to be the way to show all errors in beta6.

[Tratcher]

Correct, most of the configuration was removed from EPO. Note you don't need the app.Properties["host.AppMode"] = "development"; line either, that looks like legacy from Katana. To conditionally include the middleware do something like this:

        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            // Add the following to the request pipeline only in development environment.
            if (env.IsDevelopment())
            {
                app.UseErrorPage();
            }
            else
            {
                // Add Error handling middleware which catches all application specific errors and
                // sends the request to the following path or controller action.
                app.UseErrorHandler("/Home/Error");
            }
// ...

[henkmollema]

You used to be able to configure which parts of the error page you wanted to show with ErrorPageOptions. That has been removed since beta6 and we just show everything by default. The only thing can configure now is the amount of lines of source code before and after the line of code in the exception's stack frame. You can remove the ErrorPageOptions.ShowAll as stated above.

[manfredk]

thx for the clarification, very helpful.