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

Mahesh Chand · Answer

It means nothing. You don't have to use it. It used to be a naming standard but not anymore.

Vulpes · Answer

A lot of C# programmers like to precede field names with an underscore and a lower case letter to distinguish them from an associated property which begins with an upper case letter. For example: private string _name; public string Name { get { return _name;} set { _name = value; } } This is just a convention and you don't have to follow it if you're allergic to underscores. One thing you shouldn't do is to precede your identifiers with a double underscore as this is reserved for use by the system. For example __arglist is an undocumented C# keyword which is used for calling C functions which take a variable number of arguments.

Himanshu Pandya · Answer

Thanks