How to write comments / documentation for variable

Question

There is

///<summary>
///This is summary for some class or method
///</summary>

documentation for classes or methods. But how to write this for simple variables or lists?

I use Visual Studio 2010 and when i hover over some list, property or what ever i would like to see some kind of summary (in that little tooltip) i have written to that specific thing.

///<doc>
///always use this list!
List<String> beer = new List<String>();

edit: ok, we have found out, that it works as usual as long u comment in your class but OUTSIDE a method or a function!!

Any way to document/comment within a method too?

public class BeerForall
{
    /// <summary>
    /// it works here
    /// </summary>
    public List<String> beer = new List<string>();

    public String giveBeer()
    {
        /// is not working, u can not comment
        /// <summary>
        /// test test, not working
        /// </summary>
        List<String> moreBeer = new List<string>();

        return "beer";
    }
}

Answer 1

Edit: it looks like <var> is only supported for JavaScript.

As of Visual Studio 2012 you can add this documentation using the <var> element.

Here's Microsoft's documentation on it:
https://msdn.microsoft.com/en-us/library/hh542722(v=vs.110).aspx

Answer 2

The same way as you write summary for classes and methods work for variables.

Answer 3

You can add such XML documentation comments to any class member, not inside a member (method, property, etc).

Answer 4

As others mentioned, you can't get IntelliSense for local vars. However: If your function is so large that a "regular" comment is not close enough to read near the place where you're using the var, then the right fix is to refactor the function -- break it up into multiple, smaller methods, with fewer vars. I don't think this feature should exist, as it would serve only to facilitate writing excessively large functions.

Answer 5

As far as I know, adding comments for intellisense will not work for local variables declared within functions. If you were to make your local list an instance variable of the class, you would be able to do this.

Answer 6

Seems to work perfectly fine in Visual Studio 2010. I defined a List as a private field with a comment inside my MainForm class.

They won't work for local variables defined within functions though.