Select Data from SharePoint List using OData Service

Introduction

Today, in this article let's play around with one of the interesting and most useful concept in OData.

Question: What is select data from SharePoint list using OData Service?

In simple terms "It provides flexibility to pull out the data with helps of data services from SharePoint list".

Step 1: Create a new custom list on SharePoint site

Step 2: Browse the OData Service .svc on SharePoint

Step 3: Create a new web application to existing application

Step 4: Add a service reference to the newly created web application

Step 5: The complete code of WebForm1.aspx looks like this

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="SelectODataSPApp.WebForm1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

.grid

{

margin-top: 50px;

}

</style>

</head>

<body>

<div>

<table>

<tr>

<asp:Label ID="Label1" runat="server" Text="Select Data from SharePoint List using OData Service"

Font-Bold="true" Font-Size="Large" Font-Names="Verdana" ForeColor="Maroon"></asp:Label>

</td>

</tr>

<tr>

<asp:Button ID="Button1" runat="server" Text="Select Data" Font-Names="Verdana" Width="213px"

BackColor="Orange" Font-Bold="True" OnClick="Button1_Click" />

</td>

</tr>

<tr>

<asp:GridView ID="GridView1" runat="server" BackColor="#DEBA84" BorderColor="#DEBA84"

BorderStyle="None" BorderWidth="1px" CellPadding="3" CellSpacing="2" EnableModelValidation="True"

AutoGenerateColumns="False">

<asp:BoundField DataField="ID" HeaderText="Student Id" ReadOnly="true" SortExpression="Id" />

<asp:BoundField DataField="FirstName" HeaderText="First Name" ReadOnly="true" />

<asp:BoundField DataField="LastName" HeaderText="Last Name" ReadOnly="true" />

<asp:BoundField DataField="Age" HeaderText="Age" ReadOnly="true" />

</Columns>

</asp:GridView>

</td>

</tr>

</table>

</div>

</center>

</form>

</body>

</html>

Step 6: The complete code of WebForm1.aspx.cs looks like this

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using SelectODataSPApp.ServiceReference1;

namespace SelectODataSPApp

{

public partial class WebForm1 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

MainSiteDataContext objContext = new MainSiteDataContext(new Uri("http://win-kv3bo1rqqf7:24144/_vti_bin/ListData.svc"));

objContext.Credentials = System.Net.CredentialCache.DefaultCredentials; GridView1.DataSource = objContext.Student.ToList();

GridView1.DataBind();

}

Step 7: The output of the application looks like this

Step 8: The selected data output of the application looks like this