Why is System.Web.HttpUtility.UrlEncode giving namespace name doesn't exist in Visual C# 2008?

Question

I\'m trying to encode a URL using the HttpUtility.UrlEncode() method, why am I getting

The type or namespace name \'HttpUtility\' does not e

Answer 1

1. click on project tab in menu
2. click on Add References
3. in References window click on Framework and check the System.Web