Asp.net core TempData give 500 error when adding list and redirect to another view

Question

I am try to build alerts list and added them to TempData. But it work if I did not do redirect. When I do redirect it give me 500 error. I set break point in vi

Answer 1

This is what I use to enable Session and Temp data on Core Runtime 2.0.6.

ConfigureServices Section of Startup

// Add MVC service.
services.AddMvc(config =>
{
    // Configure global usage of antiforgery tokens.
    config.Filters.Add(new AutoValidateAntiforgeryTokenAttribute());
})
.AddSessionStateTempDataProvider();

// Adds the ability to use session variables.
services.AddSession(options =>
{
    options.Cookie.HttpOnly = true;
});