Database Reference
In-Depth Information
Figure 12-4.
Displaying OLE DB connection information
How It Works
We'll discuss only the differences between this example and the previous one. The first step is to
reference the OLE DB data provider namespace.
System.Data.OleDb.
using System.Data.OleDb;
Next, you create an
OleDbConnection
object instead of a
SqlConnection
object. Note the changes to
the connection string. Instead of the
server
parameter, you use
Provider
and
Data Source
. Notice the
value of the
Integrated Security
parameter must be
sspi
, not
true
.
// create connection
OleDbConnection conn = new 01eDbConnection(@"provider = sqloledb;data source = .\sql2012;
integrated security = sspi;" );
Finally, note that you omit the
Workstationld
property in your display. The OLE DB data provider
doesn't support it.
This is the pattern for accessing any data source with any .NET data provider. Specify the
connection string with parameters specific to the data provider. Use the appropriate objects from the
data provider namespace. Use only the properties and methods provided by that data provider.
Summary
In this chapter, you created, opened, and closed connections using two data providers and their
appropriate connection strings, parameters, and values. You displayed information about connections
after creating them using connection properties. You also saw how to handle various exceptions
associated with connections.
In the next chapter, you'll look at ADO.NET commands
and see how to use them to access data.
