finding modified rows count in datagridview

Hello Sam.. I hope your reply was not too positive.. Can you tell us what kind of
controls/methodology are you using?

In my applications I use DataGridView customized with IList bound to it.

Beginners often consider the UI (such as the DataGridView control) to be the primary container of data. Experienced programmers prefer to use the UI as the UI and something else as the primary container. A form is typically bound to a form and/or controls in a form. If the corresponding data source is a database, then the data source has relatively easy ways to determine what you are looking for. Beginners often avoid using bound controls because they must learn about them, but then they typically spend time learning things they don't need to learn; if they use the tools that Microosft and others have provided then they don't have to bother with the details you are trying to solve.