is checks if an object is compatible with a given type and returns a boolean result. as attempts to cast an object to a specified type and returns null if the cast fails.
In C#, the is operator is used for type testing, returning a boolean value indicating whether an object is compatible with a given type. For example:
if (obj is MyClass){ // Do something}
if (obj is MyClass)
{
// Do something
}
On the other hand, the As operator is used for casting objects to a specified type if the conversion is valid. It returns null if the conversion is not possible. Here’s an example:
MyClass myObj = obj as MyClass;if (myObj != null){ // Conversion successful}
MyClass myObj = obj as MyClass;
if (myObj != null)
// Conversion successful
In essence, is checks compatibility, while As performs a safe cast and returns null if the cast fails.