Introduction

This article shows how a LINQ query result can be converted to a datatable and later how the datatable can be consumed depending on the requirements.

Create ASP.Net web application

WebForm1.aspx

  1. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Copy_LINQ_to_DataTable.WebForm1" %>
  3. <!DOCTYPE html>
  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:GridView ID="GridView1" runat="server"></asp:GridView>
  13. </div>
  14. </form>
  15. </body>
  16. </html>

WebForm1.aspx.cs

  1. using System;
  2. using System.Collections.Generic;
  3. using System.Data;
  4. using System.Linq;
  5. using System.Web;
  6. using System.Web.UI;
  7. using System.Web.UI.WebControls;
  9. namespace Copy_LINQ_to_DataTable
  10. {
  11. public partial class WebForm1 : System.Web.UI.Page
  12. {
  13. SchoolManagementEntities objSchoolManagementEntities = new SchoolManagementEntities();
  15. DataTable dt = new DataTable();
  16. protected void Page_Load(object sender, EventArgs e)
  17. {
  19. var query = from r in objSchoolManagementEntities.Students select r;
  21. dt.Columns.Add("FirstName", typeof(String));
  22. dt.Columns.Add("LastName", typeof(String));
  24. foreach (var p in query)
  25. {
  26. DataRow dr = dt.NewRow();
  28. dr["FirstName"] = p.FirstName;
  29. dr["LastName"] = p.LastName;
  31. dt.Rows.Add(dr);
  32. }
  34. GridView1.DataSource = dt;
  35. GridView1.DataBind();
  36. }
  37. }
  38. }

The output of the application looks like this:

Summary

In this article we saw how a LINQ query can be converted into a DataTable. Happy coding!