*Is Operator
The Is** operator is used to check whether the run-time type of an object is compatible with a given type. The **Is operator is used in an expression of the form:
*expression* *Is *type*
Parameters
expression
An expression of a reference type.
type
A type.
Example
An *Is expression evaluates to true if both of the following conditions are met:
- expression is not null .
- expression can be cast to type . That is, a cast expression of the form
(type)(expression)``` will complete without throwing an exception.
A compile-time warning will be issued if the expression expression is type``` is known to always be **True** or always be **False** .
The *Is operator cannot be overloaded.
Note that the *Is operator only considers reference conversions. Other conversions, such as user-defined conversions, are not considered by the is operator.