Programming Logics FORUMS

I am trying to build a website in Visual Web Developer (MS) using Asp.Net and SQL, however i have come upon a problem wherein the error says that the term is already defined in the Global Namespace. This problem is what is keeping me from carrying on. Please help.

Namespace is an abstract container providing context for the items (names, or technical terms, or words)

Some of your own defined identifiers (variables , keywords) in your code are already defined with some other meaning and purpose in the Namespace
So change identifiers
It should help