Beginning Microsoft SQL Server 2008 ... - S3 Tech Training

Connecting in C#
C# is a fairly clean language and is relatively easy to learn, much like VB, but it has the extra benefit of
providing some C-based concepts and also being much closer in syntax (making it easier to transition
between the two).
Returning a Data Set
using System;
using System.Data.SqlClient;
class Program
{
static void Main()
{
//Create some base strings so you can look at these
// separately from the commands they run in
// Integrated Security - next line should be uncommented to use
string strConnect = “Data Source=(local);Initial Catalog=master;Integrated
Security=SSPI”;
// SQL Security - next line should be uncommented to use
//string strConnect = “Data Source=(local);Initial Catalog=master;User
Id=sa;Password=MyPass”;
string strCommand = “SELECT Name, database_id as ID FROM sys.databases”;
SqlDataReader rsMyRS = null;
SqlConnection cnMyConn = new SqlConnection(strConnect);
try
{
}
Appendix B: Very Simple Connectivity Examples
// “Open” the connection (this is the first time it actually
// contacts the database server)
cnMyConn.Open();
// Create the command object now
SqlCommand sqlMyCommand = new SqlCommand(strCommand, cnMyConn);
// Create the result set
rsMyRS = sqlMyCommand.ExecuteReader();
//Output what we got
while (rsMyRS.Read())
{
// Write out the first (ordinal numbers here)
// column. We can also refer to the column by name
Console.WriteLine(rsMyRS[“Name”]);
}
Console.WriteLine();
Console.WriteLine(“Press any key to continue...”);
Console.ReadKey();
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