How to control Concurrency to update 3 database tables

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When i click save button on the form

it calls 3 methods
save_Purchase();
save_dtPurcaseProduct();
save_dtPurchaseProductExp();
these 3 methods save changes to 3 database tables

so the scenario is
3 tables or none must get the changes

Posted 15-Jul-13 18:10pm

deva936

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bunzitop · Answer 1 · 2013-07-15T18:32:00

USE Transaction in your fron-end, and put the code that saves the data in to database within that transaction scope . It will meet your Requirement.

C#

bool isSuccess=false;//Global Variable
 using (TransactionScope transScope = new TransactionScope())
                 {
                          /*here goes stufs for insertion of data in database like */
                     
                         if (insertCommand1>0 && insertCommand2>0 && insertCommand3>0)
                          {
                             isSuccess = true;
                         }
                     }
                     transScope.Complete();
                     insertCommand1.Dispose();
                     insertCommand2.Dispose()
                     insertCommand3.Dispose()
                     DataBaseConnection.Dispose();
                     
                 }
             }
             catch (TransactionAbortedException ex)
             {
                 MessageBox.Show(ex.Message.ToString(), "Error");
             }
             catch (ApplicationException ex1)
             {
                 MessageBox.Show(ex1.Message.ToString(), "Error");
             }
             if (isSuccess == true)
             {
                 MessageBox.Show("Data Saved Successfully", "Success");
             }
         }