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DeleteAllOnSubmit Method in LINQ to SQL

Introduction

In this article we will see how to delete data from database using linqtosql with deleteallonsubmit method.

Step 1: Create ASP.NET Web Application

 

WebForm1.aspx

  1. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="DeleteAllOnSubmit_LINQtoSQL.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.         <asp:Button ID="Button1" runat="server" Text="Delete Data" OnClick="Button1_Click" />  
  13.     </div>  
  14.     </form>  
  15. </body>  
  16. </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 DeleteAllOnSubmit_LINQtoSQL  
  9. {  
  10.     public partial class WebForm1 : System.Web.UI.Page  
  11.     {  
  12.         DataClasses1DataContext objContext = new DataClasses1DataContext();  
  13.         protected void Page_Load(object sender, EventArgs e)  
  14.         {  
  15.   
  16.         }  
  17.   
  18.         protected void Button1_Click(object sender, EventArgs e)  
  19.         {  
  20.             List<Employee> emp = new List<Employee>()   
  21.             { new Employee { EmpId = 1 },   
  22.               new Employee { EmpId = 2 },   
  23.               new Employee { EmpId = 3 }   
  24.             };  
  25.   
  26.             objContext.Employees.DeleteAllOnSubmit(emp);  
  27.             objContext.SubmitChanges();  
  28.               
  29.         }  
  30.     }  
  31. }  

Output of the application looks like this

Summary

In this blog we have seen how we can delete data from database using linqtosql with deleteallonsubmit. Happy coding!
Next Recommended Reading Resolve LINQ to Entities Does Not Recognize the Method ToString Exception

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