DataGridViewCellCollection.IList.Insert Method (Int32, Object)
This API supports the product infrastructure and is not intended to be used directly from your code.
Inserts an item into the collection at the specified position.
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