Why we use underscore before variable name in C# ?

Question

It's usually to see a _var variable name in a class field. What does the underscore mean? 

 

   Thanks 

Answer 1

Hi ,

 

check this

 

for 3-Tier architecture

 

http://www.dotnetfunda.com/articles/show/71/3-tier-architecture-in-aspnet-with-csharp