[，]在C＃中是什么意思？

Question

As in:

public string[,] GetHelp() {
        return new string[,] {...things...}
}

And how do I search for it in the documentation?

Answer 1

It's a multi-dimensional array.

Here's the MSDN page for multi-dimensional arrays:

Multidemensional Arrays (C# Programming Guide)

Answer 2

That's a multidimensional array.

Not sure what the best way to search for such a thing in documentation is, but you may have found at least the second best way: Ask on SO.

Answer 3

It's a multi-dimensional array declaration.

http://msdn.microsoft.com/en-us/library/2yd9wwz4.aspx