DataGridViewCellCollection.IList.Add Method (Object)
This API supports the product infrastructure and is not intended to be used directly from your code.
Adds an item to the collection.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Once you add the row to a control, the number of cells it contains always matches the number of columns in the control, so this method is no longer useful.
Available since 2.0