How to use transaction concept in c#

In this article am going to explain what is transaction and how to implement it with an example of banking transaction concept. In this example I used windows application with access database for storing bank account numbers and balance in that accounts.


*Transaction is concept of executing a set of DML(Data Manipulation Language) statements at same time.
*If we want more than one DML statements to execute at a time then we need transaction.
*If all statements of transaction are executed successfully then it should call commit method even one statement is failed then it should call rollback method.
*For transaction implementation we have class called OleDbTransaction (for oledb).

Open access data base and create bank table

Accountno amount
1001 20000
1002 30000

Create new windows forms application

*Drag and drop 3 labels, 3 textboxes and 2 button controls.
*Design of form is below

*Go to Form1.cs and write the below code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;

namespace transaction
public partial class Form1 : Form
public Form1()
OleDbConnection cn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=E://srid documents/mydocsssssss/products.accdb;User ID=admin");

void clear()
foreach (Control c in this.Controls)
if (c.GetType() == typeof(TextBox))
((TextBox)(c)).Text = string.Empty;
private void button2_Click(object sender, EventArgs e)

private void Form1_Load(object sender, EventArgs e)


private void button1_Click(object sender, EventArgs e)
string s1 = "update bank set amount=amount-" + textBox3.Text + "
where accountno=" + textBox1.Text;
string s2 = "update bank set amount=amount+" + textBox3.Text + "
where accountno=" + textBox2.Text;
OleDbTransaction tran = cn.BeginTransaction();
OleDbCommand cmd = new OleDbCommand(s1, cn, tran);
int x = cmd.ExecuteNonQuery();
OleDbCommand cmd2 = new OleDbCommand(s2, cn, tran);
int y = cmd2.ExecuteNonQuery();

if (x == 0 || y == 0)
MessageBox.Show("Your Transaction failed...!");
MessageBox.Show("Your Transaction is succesfull...!");

*Press control+F5 and run the application


Author: srirama24 May 2015 Member Level: Gold   Points : 0

Please visit my article in the given below not only inline query i had given for sqlBulkcopy

Author: Sridhar Thota24 May 2015 Member Level: Gold   Points : 2

Hi Srirama.

Thanks for acknowledging,
I have visited your article and it is good.
You have given both
1.How to Use Transactions in SqlBulkCopy.
2.How to use Transactions for an Inline query.

I have did lnline query transaction with the help of small windows application.


DNS Member.

Author: Nirav Lalan28 May 2015 Member Level: Gold   Points : 2

Hello Sridhar,

This is good article.
But as per my knowledge and experience you should use only one OledbCommand instead of cmd and cmd2. Single transaction will work on single command by executing query one by one.

Hope you don't mind.

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