C#

Retrieve a Single Contact

See more Google APIs Examples

Demonstrates how to retrieve a single contact (by contactId) for the Google Contacts API. C#

bool success = false;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  --------------------------------------------------------------------------------------------------------
//  Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
//  Once connected, the REST object may be re-used for many REST API calls.
//  (It's a good idea to put the connection setup code in a separate function/subroutine.)
//  --------------------------------------------------------------------------------------------------------

//  It is assumed we previously obtained an OAuth2 access token.
//  This example loads the JSON access token file 
//  saved by this example: Get Google Contacts OAuth2 Access Token

Chilkat.JsonObject jsonToken = new Chilkat.JsonObject();
success = jsonToken.LoadFile("qa_data/tokens/googleContacts.json");
if (success != true) {
    Debug.WriteLine("Failed to load googleContacts.json");
    return;
}

Chilkat.AuthGoogle gAuth = new Chilkat.AuthGoogle();
gAuth.AccessToken = jsonToken.StringOf("access_token");

Chilkat.Rest rest = new Chilkat.Rest();

//  Connect using TLS.
bool bAutoReconnect = true;
success = rest.Connect("www.google.com",443,true,bAutoReconnect);

//  Provide the authentication credentials (i.e. the access token)
rest.SetAuthGoogle(gAuth);

//  ----------------------------------------------
//  OK, the REST connection setup is completed..
//  ----------------------------------------------

//  To retrieve the contact, send the following:

//  	GET /m8/feeds/contacts/default/full/{contactId}
//  	GData-Version: 3.0

rest.AddHeader("GData-Version","3.0");

Chilkat.StringBuilder sbPath = new Chilkat.StringBuilder();
sbPath.Append("/m8/feeds/contacts/default/full/{contactId}");
//  Get the contact having contactId = "7b1c7b6409e718a0"
int numReplacements = sbPath.Replace("{contactId}","7b1c7b6409e718a0");

Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
success = rest.FullRequestNoBodySb("GET",sbPath.GetAsString(),sbResponseBody);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

//  A successful response will have a status code equal to 200.
if (rest.ResponseStatusCode != 200) {
    Debug.WriteLine("response status code = " + Convert.ToString(rest.ResponseStatusCode));
    Debug.WriteLine("response status text = " + rest.ResponseStatusText);
    Debug.WriteLine("response header: " + rest.ResponseHeader);
    Debug.WriteLine("response body: " + sbResponseBody.GetAsString());
    return;
}

//  If the 200 response was received, then the contacts XML is contained
//  in the response body.
Chilkat.Xml xml = new Chilkat.Xml();
xml.LoadSb(sbResponseBody,false);

//  See below for a sample response body.
xml.SaveXml("qa_output/google_contact.xml");

//  Now let's parse the XML...
Debug.WriteLine("title: " + xml.GetChildContent("title"));

string emailAddress = xml.ChilkatPath("gd:email|(address)");
if (xml.LastMethodSuccess == true) {
    Debug.WriteLine("email address: " + emailAddress);
}

//  The response body XML looks something like this:

//  	<?xml version="1.0" encoding="UTF-8" ?>
//  	<entry gd:etag="&quot;R3kzezVSLit7I2A9XRFaFE8DQAU.&quot;" xmlns="http://www.w3.org/2005/Atom" xmlns:batch="http://schemas.google.com/gdata/batch" xmlns:gContact="http://schemas.google.com/contact/2008" xmlns:gd="http://schemas.google.com/g/2005">
//  	    <id>http://www.google.com/m8/feeds/contacts/support%40chilkatcloud.com/base/7b1c7b6409e718a0</id>
//  	    <updated>2016-11-18T00:41:56.783Z</updated>
//  	    <app:edited xmlns:app="http://www.w3.org/2007/app">2016-11-18T00:41:56.783Z</app:edited>
//  	    <category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/contact/2008#contact" />
//  	    <title>Chilkat Cloud</title>
//  	    <link rel="http://schemas.google.com/contacts/2008/rel#photo" type="image/*" href="https://www.googleapis.com/m8/feeds/photos/media/support%40chilkatcloud.com/7b1c7b6409e718a0" gd:etag="&quot;fgVhPls4Sit7I2BWHUlTWkQMKHUZKHkkaiw.&quot;" />
//  	    <link rel="self" type="application/atom+xml" href="https://www.googleapis.com/m8/feeds/contacts/support%40chilkatcloud.com/full/7b1c7b6409e718a0" />
//  	    <link rel="edit" type="application/atom+xml" href="https://www.googleapis.com/m8/feeds/contacts/support%40chilkatcloud.com/full/7b1c7b6409e718a0" />
//  	    <gd:name>
//  	        <gd:fullName>Chilkat Cloud</gd:fullName>
//  	        <gd:givenName>Chilkat</gd:givenName>
//  	        <gd:familyName>Cloud</gd:familyName>
//  	    </gd:name>
//  	    <gd:email rel="http://schemas.google.com/g/2005#other" address="support@chilkatcloud.com" primary="true" />
//  	    <gContact:groupMembershipInfo deleted="false" href="http://www.google.com/m8/feeds/groups/support%40chilkatcloud.com/base/6" />
//  	</entry>