How to implement transaction on website using ado.net

In previous tutorials  tutorial ,i have already  explained transactions in sql server.But now i am going to explain transactions  in real asp.net application.We can provide a save point to divide a transaction into sub logical transaction,Means if there are set of instruction in a transaction which must be executed and a set of statement will be executed or Rollback on dependent on some condition.Here we can provide a save point to those statement which must be committed. 
There are some steps to implement this concepts on website which are given below:-
Step 1:- First open your visual studio -->File-->New-->website-->select ASP.NET Empty website -->OK-->open  solution explorer -->Add a Web Form-->drag and drop Label ,Text Box and Button control from toolBox as shown below:-

Step 2:-Now open your sql server -->create a students table with three column(name,age,location).

Step 3:-Now Double click on insert button -->write the c# codes as given below:-

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;

public partial class Transaction_app : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string str = TextBox7.Text;
        SqlTransaction sqt = null;
        try
        {
            SqlConnection con = new SqlConnection("data source=Ramashanker-PC;Integrated Security=Yes;Database=master");
            con.Open();
            sqt = con.BeginTransaction();
            SqlCommand cmd = new SqlCommand("insert into students values('" + TextBox1.Text + "','" + TextBox2.Text + "','" + TextBox3.Text + "')", con);
            cmd.Transaction=sqt;
            cmd.ExecuteNonQuery();
            sqt.Save("my_trans");
            SqlCommand cmd2 = new SqlCommand("insert into students values('" + TextBox4.Text + "','" + TextBox5.Text + "','" + TextBox6.Text + "')", con);
            cmd2.Transaction = sqt;
            cmd2.ExecuteNonQuery();
            if(str!="yes")
            {
                sqt.Rollback("my_trans");
            }
            sqt.Commit();
            con.Close();
           }
            catch(Exception ex)
            {
              sqt.Rollback();
              Label1.Text=ex.Message;
            }
    }
}

Step 4:- Now Run the application(press F5)-->Enter the required field details and press Insert button as shown below:-

Step 5:- Now open your sql server -->you will see that both transactions data  have saved in students table.see it:-

Note:- When we Enter No instead of yes then only first transaction values are saved in students tables.

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