Use is to connect to a database
ADO .NET Connection class is used to specify the connection string from which database that we are getting the data.According to that we have to specify the connection string in conncection class constructor. we use the connection object to open the database connection as well as close the database connection
Using The ADO.Net Connection we can perform Disconnected connection Architecture. Using The DataSet,and DataTable.
With the help of A.D.O.net we can perform both connection and disconnection architectures...where as in A.D.O we cannot perform disconnection oriented architecture.