Instabil Gradera.ObjectChangeFilter by: Instabil .NET Framework 4.5 This package targets .NET Framework 4.5. The package is compatible with this framework or higher. 2,814 total downloads last updated 4/19/2016 Latest version: 1.0.1 Object Check Filter Library to make generic object checks, it's primarily used to make a check if someone else has saved the item you're about to save while you had the object open.