The note of learning ASP. NET [12] comparison operators on. NET

1. is comparison operator. We can use this operator to determine whether a variable is of a certain type, and then return true or false for example: int intvalue; If (intvalue is int) {system. console. writeline ("intvalue is a int type variable. ");} 2. & | for operator priority, please refer to this expression: 500> 400 & 400> 500 | 300> 200. Does this expression return true or false? We can add a bracket to this expression to clearly judge whether it is in. the returned value is as follows: 500> 400 & (400> 500 | 300> 200). Obviously, this expression returns true.