C#

WhatsApp Cloud API Send Message

See more WhatsApp Examples

Demonstrates how to send a message using the WhatsApp Cloud API (Business App) C#

bool success = false;

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

Chilkat.Http http = new Chilkat.Http();

//  The following JSON is sent in the request body.

//  {
//    "messaging_product": "whatsapp",
//    "to": "16302581871",
//    "type": "template",
//    "template": {
//      "name": "hello_world",
//      "language": {
//        "code": "en_US"
//      }
//    }
//  }

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateString("messaging_product","whatsapp");
json.UpdateString("to","15555555555");
json.UpdateString("type","template");
json.UpdateString("template.name","hello_world");
json.UpdateString("template.language.code","en_US");

http.AuthToken = "EAANrS5....yFB9Ma";
http.SetRequestHeader("Content-Type","application/json");

Chilkat.HttpResponse resp = new Chilkat.HttpResponse();
success = http.HttpJson("POST","https://graph.facebook.com/v18.0/111111111111111/messages",json,"application/json",resp);
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Debug.WriteLine(Convert.ToString(resp.StatusCode));
Debug.WriteLine(resp.BodyStr);

//  Here's a screenshot of our WhatsApp test app.

//