Introduction

Today, in this article let's play around with one of the interesting and most useful concepts in SharePoint 2010.

Question: What is update list data with wcf service?

In simple terms "It enables to update data in SharePoint custom list using a client side environment via WCF service".

Step 1: Open SharePoint 2010 Central Administration and navigate to a specific site.

Step 2: Open up Visual Studio 2012 and create an "ASP.Net Web Forms Application" project, as in:

open-asp.net-web-form-application.jpg

Step 3: Remove the following reference for the project:

System.Data.Services.Client

Step 4: Add a new reference to the project (for this you need to install ADO.NET Data Services.exe file from here).

After installation, browse to the specific location at:

C:\Program Files (x86)\ADO.NET Data Services V1.5 CTP2\bin

Add this reference to the project: Microsoft.Data.Services.Client.dll

Step 5: Add the service reference to the project, this should come up from the following link. (So here the site URL is http://win-5c3g1lanj3k:29782/ . This might be different based on your custom site URL. Another part is _vti_bin/ListData.svc which should be common to access the service reference for any site.)

http://win-5c3g1lanj3k:29782/_vti_bin/ListData.svc

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

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="UpdateListDataWCFDataServiceApp._Default" %>

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

<html xmlns="http://www.w3.org/1999/xhtml">

<head id="Head1" runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<center>

<div>

<table>

<tr>

<td colspan="2">

<asp:Label ID="Label1" runat="server" Text="Update List Data - WCF Data in SharePoint 2010 using VS 2012 "

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

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label6" runat="server" Text="Please Enter Student Id" Font-Size="Large"

Font-Names="Verdana" Font-Italic="true"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label2" runat="server" Text="Please Enter FirstName" Font-Size="Large"

Font-Names="Verdana" Font-Italic="true"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label3" runat="server" Text="Please Enter LastName" Font-Size="Large"

Font-Names="Verdana" Font-Italic="true"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td>

<asp:Label ID="Label4" runat="server" Text="Please Enter Age" Font-Size="Large" Font-Names="Verdana"

Font-Italic="true"></asp:Label>

</td>

<td>

<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td colspan="2" align="center">

<asp:Button ID="Button2" runat="server" Text="Update List Data" Font-Names="Verdana"

Width="166px" BackColor="Orange" Font-Bold="True" OnClick="Button2_Click" />

</td>

</tr>

<tr>

<td colspan="2" align="center">

<asp:Label ID="Label5" runat="server" Font-Bold="true" Font-Names="Verdana" ForeColor="Maroon"></asp:Label>

</td>

</tr>

</table>

</div>

</center>

</form>

</body>

</html>

Step 7: 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 UpdateListDataWCFDataServiceApp.ServiceReference1;

namespace UpdateListDataWCFDataServiceApp

{

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

{

protected void Page_Load(object sender, EventArgs e)

{

TextBox4.Focus();

}

protected void Button2_Click(object sender, EventArgs e)

{

if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text) || string.IsNullOrEmpty(TextBox3.Text) || string.IsNullOrEmpty(TextBox4.Text))

{

Label5.Text = "Please Enter Some Values";

Label5.ForeColor = System.Drawing.Color.Red;

}

else

{

MainSiteDataContext objContext = new MainSiteDataContext(new Uri("http://win-5c3g1lanj3k:29782/_vti_bin/ListData.svc"));

objContext.Credentials = System.Net.CredentialCache.DefaultCredentials;

var updateQuery = (from r in objContext.Students where r.Id == int.Parse(TextBox4.Text) select r).Single();

updateQuery.FirstName = TextBox1.Text;

updateQuery.LastName = TextBox2.Text;

updateQuery.Age = int.Parse(TextBox3.Text);

objContext.UpdateObject(updateQuery);

objContext.SaveChanges();

Label5.Text = "Data Updated Successfully";

Label5.ForeColor = System.Drawing.Color.Green;

TextBox1.Text = string.Empty;

TextBox2.Text = string.Empty;

TextBox3.Text = string.Empty;

TextBox4.Text = string.Empty;

}

}

}

}

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

updating-data-sharepoint2010.jpg

Step 9: The output of the application looks like this:

update-list-data-sharepoint2010.jpg

Step 10: The data entering output of the application looks like this:


wcf-update-list-data-sharepoint2010.jpg

Step 11: The data updated in custom list (Students) output of the application looks like this:

data-entering-output-of-the-application.jpg

I hope this article is useful for you.