Use keywords as attribute names in C#

In ASP.NET MVC, you may want to use the C# keyword as the attribute name in the view. For example, consider the following code:

// 此代码无法编译，因为 "class" 是 C# 中的关键字。

This code cannot be compiled because "class" is a keyword in C#. To solve this problem, you can use it as an identifier by adding an @ symbol before the keyword.

// 通过添加@符号，可以成功编译。

According to MSDN's documentation on C# keywords:

"Keywords are predefined reserved identifiers that have special meanings for the compiler. They cannot be used as identifiers in the program unless the @ symbol is prefixed before the keyword."

So by using the @ prefix, the attribute name can be escaped and allowed to compile.