The Difference Between 'is' and 'as' Operators

The difference between 'is' and 'as' operators.'is' checks compatibility of runtime type, 'as' converts compatible types. 'is' sends true if types match, false if not. 'as' returns object if compatible, null if not. 'is' for type compatibility check, 'as' for conversions.

	'is'	'as'
Function	If the run-time type of an expression result is compatible with a given type, the 'is' operator is checked by it.	'as' operator is used to perform conversion between compatible reference types or Nullable types.
Type	Boolean	Non-Boolean
Return type when conversion happens successfully	If the given object is of the same type, then 'is' sends true	'as' sends object when the type of object is compatible with the given type
Return type when conversion not possible	If the given object is not of the same type, then 'is' sends false	'as' returns null if conversion not possible
Use Case	'is' is used for Only Boxing Unboxing and reference conversions	'as' operator is used only for nullable, reference and boxing conversions