(C# UWP/WinRT) Iterate Pages in Feed

Demonstrates how to read the next page in the user's Facebook feed, and iterates through all of the pages in the Facebook feed.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

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

// This example assumes a previously obtained an access token
Chilkat.OAuth2 oauth2 = new Chilkat.OAuth2();
oauth2.AccessToken = "FACEBOOK-ACCESS-TOKEN";

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

// Connect to Facebook and send the following GET request:
bool success = await rest.ConnectAsync("graph.facebook.com",443,true,true);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

// Provide the authentication credentials (i.e. the access key)
rest.SetAuthOAuth2(oauth2);

// Gets the 1st page in the user's feed.
string responseJson = await rest.FullRequestNoBodyAsync("GET","/v2.7/me/feed");
if (rest.LastMethodSuccess != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.EmitCompact = false;
json.Load(responseJson);

// 
// See Parsing the Facebook User Feed for code showing how to parse the JSON feed content.
// 

Chilkat.Url nextUrl = new Chilkat.Url();

// Get the URL for the next page in the feed.
string nextUrlStr = json.StringOf("paging.next");
while (json.LastMethodSuccess == true) {

    Debug.WriteLine("Next page URL: " + nextUrlStr);

    nextUrl.ParseUrl(nextUrlStr);

    // Prepare for getting the next page in the feed.
    // We can continue using the same REST object.
    // If already connected, we'll continue using the existing connection.
    // Otherwise, a new connection will automatically be made if needed.
    rest.ClearAllQueryParams();
    rest.AddQueryParams(nextUrl.Query);

    responseJson = await rest.FullRequestNoBodyAsync("GET","/v2.7/me/feed");
    if (rest.LastMethodSuccess != true) {
        Debug.WriteLine(rest.LastErrorText);
        return;
    }

    json.Load(responseJson);
    // See Parsing the Facebook User Feed for code showing how to parse the JSON feed content.

    // Get the URL for the next page.
    nextUrlStr = json.StringOf("paging.next");
}

Debug.WriteLine("No more pages in the feed.");