Represents an open connection to a server.
The following sample demonstrates how using base classes helps to create data source independent code.
public void PrintDept(DbConnectionBase myConnection) {
DbCommandBase myCommand = (DbCommandBase)myConnection.CreateCommand();
myCommand.CommandText = "SELECT Id, Name, Type FROM Account";
myConnection.Open();
DbDataReader myReader = myCommand.ExecuteReader();
try {
while (myReader.Read()) {
Console.WriteLine(myReader.GetString(0) + " " +
myReader.GetString(1) + " " + myReader.GetString(2));
}
}
finally {
myReader.Close();
myConnection.Close();
}
}
Public Sub PrintDept(ByVal myConnection As DbConnectionBase)
Dim myCommand As DbCommandBase = myConnection.CreateCommand()
myCommand.CommandText = "SELECT Id, Name, Type FROM Account"
myConnection.Open()
Dim myReader As DbDataReader = myCommand.ExecuteReader()
Try
While myReader.Read()
Console.WriteLine(String.Concat(myReader.GetString(0), " ", _
myReader.GetString(1), " ", myReader.GetString(2)))
End While
Finally
myReader.Close()
myConnection.Close()
End Try
End Sub