LINQ

Transactions using Entity Framework

Introduction

In this blog we will see how to use transactions in entity framework.

Step 1: Create asp.net web application

Webform1.aspx

  1. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="EF_Transcation_Support.WebForm1" %>  
  2.   
  3. <!DOCTYPE html>  
  4.   
  5. <html xmlns="http://www.w3.org/1999/xhtml">  
  6. <head runat="server">  
  7.     <title></title>  
  8. </head>  
  9. <body>  
  10.     <form id="form1" runat="server">  
  11.     <div>  
  12.     <table>  
  13.                 <tr>  
  14.                     <td>  
  15.                         <asp:Label ID="Label1" runat="server" Text="EF Transaction" Font-Bold="true"></asp:Label>  
  16.                     </td>  
  17.                 </tr>  
  18.             </table>  
  19.             <br />  
  20.             <br />  
  21.             <table>  
  22.                 <tr>  
  23.                     <td colspan="2">  
  24.                         <asp:Button ID="Button1" runat="server" Text="Insert Data"  
  25.                             BackColor="Orange" Font-Bold="true" OnClick="Button1_Click" />  
  26.                         <br />  
  27.                         <br />  
  28.                     </td>  
  29.                 </tr>  
  30.             </table>  
  31.     </div>  
  32.     </form>  
  33. </body>  
  34. </html>

Webform1.aspx.cs

  1. using System;  
  2. using System.Collections.Generic;  
  3. using System.Linq;  
  4. using System.Web;  
  5. using System.Web.UI;  
  6. using System.Web.UI.WebControls;  
  7.   
  8. namespace EF_Transcation_Support  
  9. {  
  10.     public partial class WebForm1 : System.Web.UI.Page  
  11.     {  
  12.         protected void Page_Load(object sender, EventArgs e)  
  13.         {  
  14.   
  15.         }  
  16.   
  17.         protected void Button1_Click(object sender, EventArgs e)  
  18.         {  
  19.             using (EmployeeDBEntities empContext = new EmployeeDBEntities())  
  20.             {  
  21.                 using (var transaction = empContext.Database.BeginTransaction())  
  22.                 {  
  23.                     try  
  24.                     {  
  25.   
  26.                         Employee employee = new Employee();  
  27.                         employee.Id = 1;  
  28.                         employee.FirstName = "James";  
  29.                         employee.LastName = "Robert";  
  30.                         employee.DeptId = 1;  
  31.                         empContext.Employees.Add(employee);  
  32.                         empContext.SaveChanges();  
  33.   
  34.                         Department dept = new Department();  
  35.                         dept.DeptId = 1;  
  36.                         dept.Name = "IT";  
  37.                         empContext.Departments.Add(dept);  
  38.                         empContext.SaveChanges();  
  39.   
  40.                         transaction.Commit();  
  41.                     }  
  42.                     catch (Exception ex)  
  43.                     {  
  44.                         transaction.Rollback();  
  45.                     }  
  46.                 }  
  47.            }  
  48.         }  
  49.     }  
  50. }

Output of the application looks like this

Summary

In this blog we have seen how we can use transactions in entity framework. Happy coding.
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