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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 20-2 extracted from chapter Transactions


Listing 20-1<     > Listing 20-3


This listing can be compiled with the command line:
csc.exe /target:exe Example_20_2.cs /r:System.Transactions.dll
Errors: 0 Warnings: 0


Example_20_2.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 {
         using (TransactionScope txScope = new TransactionScope()) {
            using (SqlConnection cnx = new SqlConnection(sCnx)) {
               cnx.Open();
               DbCommand cmd = new SqlCommand(sCmd1, cnx);
               cmd.ExecuteNonQuery();
               cmd.CommandText = sCmd2;
               cmd.ExecuteNonQuery();
               txScope.Complete();
            // end using cnx.
         // end using txScope, the transaction terminates here.
      catch {
         // If an exception has been raised before or during the
         // call to 'Complete()' data of the DB haven't been updated.
      }
   }
}	
Copyright Patrick Smacchia 2006 2007