Extra values placed in a detailsview control

Question

In a C# detailsview 2010 control row, I would like to place the value from a session variable. The value does not come from the linq data source that is connected to the detailsview control. Thus can you tell me if this is possible to place the value from a session variable into a row in the detailsview control? If so, can you tell me and or point me to a reference that will show me how to accomplish this task?