Chilkat Examples

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C# UWP/WinRT Web API Examples

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(C# UWP/WinRT) Emoji Tweet

Demonstrates posting a status update that includes an emoji character.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

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

// ----------------------------------------------------------------------
// This initial setup, which involves setting the OAuth1 properties and connecting
// to api.twitter.com, is only required once at the beginning.  Once connected, the same
// object instance may be re-used, and if necessary, it will automatically reconnect
// as needed.

// Assume we've previously obtained an access token and saved it to a JSON file..
Chilkat.JsonObject json = new Chilkat.JsonObject();
bool success = json.LoadFile("qa_data/tokens/twitter.json");

Chilkat.Rest rest = new Chilkat.Rest();
Chilkat.OAuth1 oauth1 = new Chilkat.OAuth1();

oauth1.ConsumerKey = "TWITTER_CONSUMER_KEY";
oauth1.ConsumerSecret = "TWITTER_CONSUMER_SECRET";
oauth1.Token = json.StringOf("oauth_token");
oauth1.TokenSecret = json.StringOf("oauth_token_secret");
oauth1.SignatureMethod = "HMAC-SHA1";
oauth1.GenNonce(16);

rest.SetAuthOAuth1(oauth1,false);

bool bAutoReconnect = true;
success = await rest.ConnectAsync("api.twitter.com",443,true,bAutoReconnect);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

// This ends the initial setup...
// ----------------------------------------------------------------------

// For this example, I've pre-created a text file containing two emoji
// characters (the "ghost" emoji, and a "face savouring delicious food" emoji).  
// This text file was saved using the utf-8 encoding.

// The utf-8 bytes for the ghost emoji are 0x9f 0x91 0xbb.  (Note: This is the utf-8
// representation that does not use surrogate pairs.)
// 
// The utf-8 bytes for the "face savouring delicious food" emoji are \xF0\x9F\x98\x8B.

Chilkat.StringBuilder sbText = new Chilkat.StringBuilder();
sbText.LoadFile("qa_data/txt/ghost_emoji.txt","utf-8");
sbText.Prepend("Test tweet using two emoji chars: ");

// Send a tweet...
rest.ClearAllQueryParams();
rest.AddQueryParam("status",sbText.GetAsString());
string resp = await rest.FullRequestFormUrlEncodedAsync("POST","/1.1/statuses/update.json");
if (rest.LastMethodSuccess != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

Chilkat.JsonObject jsonResponse = new Chilkat.JsonObject();
jsonResponse.EmitCompact = false;
jsonResponse.Load(resp);

if (rest.ResponseStatusCode != 200) {
    Debug.WriteLine(jsonResponse.Emit());
    return;
}

// Show the successful response:
Debug.WriteLine(jsonResponse.Emit());
Debug.WriteLine("Success.");

 

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