UrlHelper Extension to Modify Query String

The following extension method allows you to add, update, or remove parameters from a URL's query string. public static class UrlHelperExtensions { /// <summary> /// Add, update, or remove parameters from »

System.NullReferenceException: Object reference not set to an instance of an object

For some reason, this particular error seems to just confuse the stuffing out of ASP.NET MVC developers in particular. Granted, it's not one of the most obvious or informative »