ASP.NET Core 6: problems with HttpContext

Question

I wrote the following public method:

 public IList<CookieType> GetAcceptedCookieTypes(HttpContext httpContext)
        {
            var result = new List<CookieType>();
            // accepted by default
            result.Add(CookieType.Essential);

            var cookie = httpContext.Request.Cookies["cc_cookie_accept"];
            if (cookie != null)
            {
                var arrVal = cookie.Split('.');
                if (arrVal != null && arrVal.Length > 1)
                {
                    var arrCheck = arrVal[1];
                    if (arrCheck.Length > 0 && arrCheck[0] == '1')
                    {
                        result.Add(CookieType.Statistical);
                    }
                }
            }
            return result;
        }

I have multiple places where the method gets consumed, but I keep getting this error since I had to add the HttpContext httpContext:

Error CS7036 There is no argument given that corresponds to the required formal parameter 'httpContext' of 'GDPRScript.GetAcceptedCookieTypes(HttpContext)

I tried consuming it like this:

var _httpContext = HttpContext httpContext;
types = GetAcceptedCookieTypes(_httpContext);

But then it throws 3 errors on the definition of _httpContext (value) them being: CS0103, CS0201, CS1002

How can I properly fix this?

@vernou then it apparently complains about the `httpContext` not existing in the current context — Munchkin, Nov 22 '22 at 09:43
Where do you call this method? From a derived `ControllerBase`? — vernou, Nov 22 '22 at 09:44
@vernou I think I call it from a custom component, how can I check/determine? — Munchkin, Nov 22 '22 at 10:04
Maybe this other question can help : [Access the current HttpContext in ASP.NET Core](https://stackoverflow.com/questions/31243068/access-the-current-httpcontext-in-asp-net-core) — vernou, Nov 22 '22 at 10:34
The combination of the suggested question and the answer below made the solution, thanks! — Munchkin, Nov 22 '22 at 10:52

score 1 · Accepted Answer · answered Nov 22 '22 at 09:47

1

You need to pass the HttpContext that is... well, in your context. Since you did not explain what your context of calling this method is, you will need to find that yourself:

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/http-context?view=aspnetcore-6.0

In this link, there is a list how to get your HttpContext depending on what technology you use. ASP.NET Core is a wide field of technologies or ways to call or be called and the way to get a HttpContext varies slightly in each.

If you are not directly calling this in your controller, this might be your way of getting a HttpContext via Dependency injection in any component.

answered Nov 22 '22 at 09:47

nvoigt

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I extended my startup.cs with this: `services.AddControllers(); // TEST add HttpContext functionality globally services.AddHttpContextAccessor();` but apparently it still throws the same error... – Munchkin Nov 22 '22 at 10:04
Uh, yes, you have to follow the instructions, *all* of them. Did you inject a `IHttpContextAccessor` into your class and use `injectedVariable.HttpContext`? – nvoigt Nov 22 '22 at 10:29
1

Works wonders! Thanks! – Munchkin Nov 22 '22 at 10:51

ASP.NET Core 6: problems with HttpContext

1 Answers1