How properly inject HttpContext in MVC6

Question

My data service layer in my API required information that are of the request in the httpcontext, I read this question and they said that I should used the ActionContext inst

Answer 1

If you are trying to access HttpContext, then you can use IHttpContextAccessor for this purpose.

Example:

services.AddTransient<QueryValueService>();

---

public class QueryValueService
{
    private readonly IHttpContextAccessor _accessor;

    public QueryValueService(IHttpContextAccessor httpContextAccessor)
    {
        _accessor = httpContextAccessor;
    }

    public string GetValue()
    {
        return _accessor.HttpContext.Request.Query["value"];
    }
}

Note that in the above example QueryValueService should be registered only as Transient or Scoped and not Singleton as HttpContext is per-request based...