As I need to send message on user's whatsapp number so I have downloaded WhatsApp API from nuget packages. and also I implemented code according to that. But after so many search I found that I need to register mobile number to get password...using WART but I think this application is not working and not able to get password from WhatsApp.

So if anyone implement this feature of sending message on whatsapp number in Asp.net c# then please update me how to do this using WhatsApp Api.. even I don't know whatsapp is provide any API or not.

I have tried with below code...but I need password before that..

            string fromMob = "919xxxxxxxxx";             string toMob = txtMobileNo.Text.Trim();             string msg = "This is first WhatsApp Message Whatsapp API";             WhatsApp wa = new WhatsApp(fromMob, "RequiredPassword", "SD", false, false);             try             {                 wa.OnConnectSuccess += () =>                 {                     wa.OnLoginSuccess += (phoneNumber, data) =>                     {                         wa.SendMessage(toMob, msg);                     };                     wa.OnLoginFailed += (data) =>                         {                             msg = "Login Failed" + data;                         };                 };                 wa.OnConnectFailed += (ex) =>                     {                         msg = "Connection Failed" + ex;                     };                 wa.Connect();             }             catch { } 

I want to send whatsapp messages through c# program. I found out there are different gateway through which we can send messages from c# to whatsapp. but I want to create my own program through which we can send messages to whatsapp. Is it possible? is there any guidelines for that?

I have to send messages to the customer's whatsapp number programatically.

What are the pre requirements/needs?

Do I need to convert/register my personal number to business account?

Is there any API provided by whatsapp for this?

I wanted to know how I can send text to a specific whatsapp contact. I found some code to view a specific contact, but not to send data.

Cursor c = getContentResolver().query(ContactsContract.Data.CONTENT_URI,     new String[] { ContactsContract.Contacts.Data._ID }, ContactsContract.Data.DATA1 + "=?",     new String[] { id }, null); c.moveToFirst(); Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("content://com.android.contacts/data/" + c.getString(0))); startActivity(i); c.close(); 

This works fine for viewing a whatsapp-contact, but how can I add some text now? Or didn't the Whatsapp-developer implement such kind of an api?