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Paradoxal Press

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Category: Programming
Level: Beginner to seasoned
900 pages
ISBN-10 097661322-0
ISBN-13 978-097661322-0
$59.99 USA
$79.99 CANADA


Listing 20-5 extracted from chapter Transactions


Listing 20-4<     > Listing 20-6


This listing can be compiled with the command line:
csc.exe /target:exe Example_20_5.cs /r:System.Transactions.dll
Errors: 0 Warnings: 0


Example_20_5.cs
using System.Data.Common;
using System.Data.SqlClient;
using System.Transactions;
class Program {
   static void Main() {
      string sCnx =
         "server = localhost ; uid=sa ; pwd =; database = ORGANIZATION";
      string sCmd1 =
         "INSERT INTO DEPARTMENTS VALUES ('COM','Communication')";
      string sCmd2 =
    "INSERT INTO EMPLOYEES VALUES ('COM','Smith','Adam','(123) 456-7899')";
      try {
         CommittableTransaction tx = new CommittableTransaction(); 
         using (SqlConnection cnx = new SqlConnection(sCnx)) {
            cnx.Open();
            // This call enlists the DB connection in the transaction.
            cnx.EnlistTransaction(tx);
            DbCommand cmd = new SqlCommand(sCmd1, cnx);
            cmd.ExecuteNonQuery();
            cmd.CommandText = sCmd2;
            cmd.ExecuteNonQuery();
         // end using cnx.
         tx.Commit();
      catch /*...*/ }
   }
}	
Copyright Patrick Smacchia 2006 2007