Import Gmail Contacts In Asp.Net

Import Gmail Contacts In Asp.Net
Import Gmail Contacts In Asp.Net 2.0,3.5,4.0 Using Google Data API C# And VB.NET. Several times we need to create web applications which require to import or fetch Gmail Contacts or address book. This example will explain how to fetch or import Gmail contacts in web applications.

For Importing Gmail Contacts in application we need to download Google Data API and install on system to get the desired dlls.

Create a new website and visual studio and put these 3 dlls in BIN folder of application from the location google data API has been installed on ur system.

1. Google.GData.Client
2. Google.GData.Contacts
3. Google.GData.Extensions

Add references to these dlls in your application by right clicking on solution explorer and select add reference.

Add two text box and one list box on aspx page and design it to look better.

Add one button to the page for importing the Gmail contacts or address book in Click Event.

HTML Markup Of Page

<form id="form1" runat="server">
        <b>Email Address : </b>
        <br />
        <asp:TextBox ID="txtEmail" runat="server">
        <br />
        <br />
        <b>Password : </b>
        <br />
        <asp:TextBox ID="txtPassword" runat="server" 
                     TabIndex="1" TextMode="Password">
        <br />
        <br />
        <asp:Button ID="btnContacts" runat="server"  
                    TabIndex="2" Text="Import Contacts" 
                    Width="125px" />
        <br />
        <br />
        <br />
        <b>Contacts:<br />
        <asp:ListBox ID="lstContacts" runat="server" 
        <br />
        <br />
Go to code behind of aspx page and add directives mentioned below

using Google.Contacts;
using Google.GData.Client;
using Google.GData.Contacts;
using Google.GData.Extensions;

Now in design view of page double click on button to generate Click event and write below mentioned code in click event of button to fetch or import gmail contacts in list box
C# Code Behind
protected void btnContacts_Click(object sender, EventArgs e)
        //Provide Login Information
        RequestSettings rsLoginInfo = new RequestSettings("", txtEmail.Text, txtPassword.Text);
        rsLoginInfo.AutoPaging = true;
        // Fetch contacts and dislay them in ListBox
        ContactsRequest cRequest = new ContactsRequest(rsLoginInfo);
        Feed <contact> feedContacts = cRequest.GetContacts();
        foreach (Contact gmailAddresses in feedContacts.Entries)
            Console.WriteLine("\t" + gmailAddresses.Title);
            foreach (EMail emailId in gmailAddresses.Emails)
                Console.WriteLine("\t" + emailId.Address);
                lstContacts.Items.Add(" " + emailId.Address);
VB.NET Code Behind
Protected Sub btnContacts_Click(sender As Object, e As EventArgs)
 'Provide Login Information
 Dim rsLoginInfo As New RequestSettings("", txtEmail.Text, txtPassword.Text)
 rsLoginInfo.AutoPaging = True
 ' Fetch contacts and dislay them in ListBox
 Dim cRequest As New ContactsRequest(rsLoginInfo)
 Dim feedContacts As Feed(Of Contact) = cRequest.GetContacts()
 For Each gmailAddresses As Contact In feedContacts.Entries
  Console.WriteLine(vbTab + gmailAddresses.Title)
  For Each emailId As EMail In gmailAddresses.Emails
   Console.WriteLine(vbTab + emailId.Address)
   lstContacts.Items.Add(" " + emailId.Address)
End Sub

Now this should show contacts in list box

Hope this helps

Download sample code attached

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