The call is ambiguous between single method i.e extension method

Question

I have an extension method like

public static class Extension
{
    public static string GetTLD(this string str)
    {
        var host = new System.Uri(str).Hos         


        

Answer 1

I had the same problem. After some research and experimenting, I found that (for whatever reason) visual studio doesn't like extension methods in the App_Code folder. Easiest solution I found was to just change the name of the folder.