How is the typeof keyword used in C#?

In C#, the typeof keyword is used to obtain the System.Type object of a specified type. Typically, the typeof keyword will return the Type object of the specified type at compile time, rather than dynamically at runtime.

For example, you can use the typeof keyword to obtain the Type object of an integer type.

Type intType = typeof(int);

You can also use the typeof keyword to obtain the Type object of a custom class.

class MyClass
{
    // 类的定义
}

Type myClassType = typeof(MyClass);

After obtaining the Type object, you can use it to perform various type-related operations, such as obtaining the type’s name, base class, interfaces, and other information.