How can Convert DataRowView To DataRow in C#

I want to use Drag Drop But i don't know How to drag information from a DataGridView control to DataGridView or ListBox ?

i got a link http://www.codeproject.com/KB/cpp/D开发者_运维问答ataGridView_Drag-n-Drop.aspx

DataRowView.Row should contain the DataRow displayed in the view.

A DataRowView is not a DataRow, and isn't convertible to a DataRow. But, you can access the corresponding DataRow using the Row property.

here i've got the solution using the narrow casting

The name of the combobox in this example is CBTables

 DataRowView DRV = (DataRowView)CBTables.SelectedItem;
 DataRow DR = (DataRow) DRV.Row;