(.NET Core C#) 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.

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// 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 = rest.Connect("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 = rest.FullRequestNoBody("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 = rest.FullRequestNoBody("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.");