PropertyHandle :: IsDirty - Is property handle dirty

The function checks, whether the selection or instance in a property handle has been changed. This happens in client/server mode, when the selection or instance in a property handle on the server side differs from the selection or instance on the client side.

Usually, the client automatically submits a refresh, when the instance is dirty after a client server action, e.g. after executing an action. The application can avoid the refresh by resetting the dirty flag (ResetDirty()).