From the [source code](https://github.com/ASP-NET-MVC/aspnetwebstack/blob/master/src/System.Net.Http.Formatting/Internal/HttpValueCollection.cs#L34) it oughts to be by design that `HttpValueCollection ` is public only in PCL and internal in regular .NET.
Why is that? What was the intend? What to use instead?
Comments: Thanks. But unfortunately it doesn't support `Add()`.
Why is that? What was the intend? What to use instead?
Comments: Thanks. But unfortunately it doesn't support `Add()`.