property Grid.ScrollBySingleLine as Boolean
Retrieves or sets a value that indicates whether the control scrolls the lines to the end. If you have at least a cell that has SingleLine false, you have to check the ScrollBySingleLine property.

TypeDescription
Boolean A boolean expression that indicates whether the control scrolls the lines one by one.
By default, the ScrollBySingleLine property is False. We recommend to set the ScrollBySingleLine property on True if you have one of the following:

Use the EnsureVisibleItem property to ensure that an item fits the control's client area.  Use the ScrollBars property to hide the control's scroll bars. Use the Scroll method to programmatically scroll the control's content.