Adds an item to the list of items for a DataGridViewComboBoxCell.
public int Add(
An object representing the item to add to the collection.
item is null.
The cell's DataSource property value is not null.
The cell is in a shared row.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.