How to create a Windows7 application to send a text message

Ivan Climov

7y3.1kVisual Basic .NET

For example, I need a WinForm application in order to send a message to viber.

I get "TOKEN".

I do not understand what to do next.

I studied

Viber REST API - link - https://developers.viber.com/docs/api/rest-bot-api/#viber-rest-api

Example bot C # - link - https://gist.github.com/eranziman/dc27385f6674c3d0bc4a3bcf784344d6

github.com. Search - "viber bot" - link - https://github.com/search?l=C%23&q=viber+bot&type=Repositories

But I do not understand how to assemble it into one system and run the application.

Questions

How to create a Windows7 application to send a text message with a picture in viber?

Can anyone have experience in such work?

I am interested in a brief instruction. If not difficult, then with code examples and (or) links.

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Mario Scheeren7y ago
Accepted answer
Well ther main problem is, that the viber api is targeted to be used within webapplication / webapi. The Webhook is basically an infromation to the viber api to send (post) messages to a specific url. So since you want to use it within a WindowsApplication this is not going to work. You will either need to write a Service, with an Api to the outside world, which can be reached like this https:// mydomain.com/myViberApi or the communication only goes one way.

Second thing is: you need to get familar with WebCommunications and such, e.g Converting Objects to JSON and reverse, otherwise you will never be able to understand what is going on.

So finally an Example of how to use the API the correct C# way. Be sure to add Nuget packet Newtonsoft.Json:
static void ViberCall()
{
    var request = (HttpWebRequest)WebRequest.Create("https://chatapi.viber.com/pa/send_message");
    request.ContentType = "application/json";
    request.Method = "POST";
    request.Headers.Add("X-Viber-Auth-Token", "445da6az1s345z78-dazcczb2542zv51a-e0vc5fva17480im9");

    using (var streamWriter = new StreamWriter(request.GetRequestStream()))
    {

        var msg = new ViberMessage
        {
            Receiver = "01234567890A=",
            Min_api_version = 1,
            Sender = new ViberSender
            {
                Name = "John McClane",
                Avatar = "http://avatar.example.com"
            },
            Tracking_data = "tracking data",
            Type = "text",
            Text = "Hello World"
        };

        string json = JsonConvert.SerializeObject(msg);

        streamWriter.Write(json);
        streamWriter.Flush();
    }

    var response = (HttpWebResponse)request.GetResponse();
    using (var streamReader = new StreamReader(response.GetResponseStream()))
    {
        var result = streamReader.ReadToEnd();
    }
}

public class ViberMessage
{
    public string Receiver { get; set; }
    public int Min_api_version { get; set; } = 1;
    public ViberSender Sender { get; set; }
    public string Tracking_data { get; set; }
    public string Type { get; set; } = "text";
    public string Text { get; set; }
}

public class ViberSender
{
    public string Name { get; set; }
    public string Avatar { get; set; }
}
+2
Ivan Climov7y ago
@Mario Scheeren
Thank.
You helped me a lot.
But I still do not understand until the end ....
I read in `Example bot C #` - link - https://gist.github.com/eranziman/dc27385f6674c3d0bc4a3bcf784344d6
what is needed is `set web hook`.
Quote: "4. Call set web hook (https://chatapi.viber.com/pa/set_webhook) with the URL of ViberDummyBot.aspx (Must have trusted ssl certificate)"
I found the `kutsoff / Viber-Webhook-Api` library https://github.com/kutsoff/Viber-Webhook-Api
Question_1: Do I need to use the library or will I solve my problems using your method?
Question_2: If I need to send out to several contacts, can I use this method?
Do I need to use for each message:

var request = (HttpWebRequest) WebRequest.Create ("https://chatapi.viber.com/pa/send_message");
request.ContentType = "application / json";
request.Method = "POST";
request.Headers.Add ("X-Viber-Auth-Token", "445da6az1s345z78-dazcczb2542zv51a-e0vc5fva17480im9");
Or you can register once globally and everything?
Example
public partial class Form1 : Form
    {

         HttpWebRequest request;


        public Form1()
        {
            InitializeComponent();
        }

        #region c-sharpcorner.com // Mario Scheeren
        public void HttpWebRequest_Execute()
        {
            request = (HttpWebRequest)WebRequest.Create("https://chatapi.viber.com/pa/send_message");
            request.ContentType = "application/json";
            request.Method = "POST";
            request.Headers.Add("X-Viber-Auth-Token", "445da6az1s345z78-dazcczb2542zv51a-e0vc5fva17480im9");
        }


        //
        public void SendMessage(string receiver, string min_api_version, string sender, string name, string avatar, string tracking_data, string type, string text)
        {
            try
            {
                using (var streamWriter = new StreamWriter(request.GetRequestStream()))
                {
                    string json = @"{
                                ""receiver"": " + receiver + ", " +
                                ""min_api_version"":1,
                                ""sender"":{
                                ""name"":""John McClane"",
                                ""avatar"":""http://avatar.example.com""
                                 },
                                ""tracking_data"":""tracking data"",
                                ""type"":""text"",
                                ""text"":""Hello world!""
                                }";


                    streamWriter.Write(json);
                streamWriter.Flush();
            }


            var response = (HttpWebResponse)request.GetResponse();
            using (var streamReader = new StreamReader(response.GetResponseStream()))
            {
                var result = streamReader.ReadToEnd();
            }


        }
            catch (Exception ex)
            {
                string s = ex.Message;
                string t = ex.StackTrace;
                // throw;
                MessageBox.Show(s + " \r\n "
                                  + t);
            }
        }
#endregion

If I am right in the question `Question_2`.
Question_3: How to correctly insert variables (parameters) in `string json`?
I started to insert with `receiver`, but I get an error

Library `kutsoff / Viber-Webhook-Api
Question_4: How to use the `kutsoff / Viber-Webhook-Api` library?
`kutsoff / Viber-Webhook-Api` https://github.com/kutsoff/Viber-Webhook-Api
I did:
- connected using the library link;
- for example, created a method that performs all the functions of the library;
(at least those that I see)
Am I using the library correctly?
Question_5: Does the `kutsoff / Viber-Webhook-Api` library send messages using the` Post () `method?
Question_6: What are `string endpoint` and` Subscription`?
I did as I understand ..

#region Viber-Webhook-Api.
// https://github.com/kutsoff/Viber-Webhook-Api
public void ViberWebhookTest()
{
try
{
string authToken = "445da6az1s345z78-dazcczb2542zv51a-e0vc5fva17480im9";
string endpoint = "";   // ???
Subscription subscription; // ???
subscription = Subscription.All;

ViberWebhook viberWebhook = new ViberWebhook(authToken, endpoint, subscription);

// *** method `Register()`
var statusRegister = viberWebhook.Register();

// *** method `GetPublicAccountInfo()`
var GetPublicAccountInfo = viberWebhook.GetPublicAccountInfo();

// *** method `Post()`
ViberAPI.Models.MessageTypes.Message message = new ViberAPI.Models.MessageTypes.Message();

message.auth_token = "445da6az1s345z78-dazcczb2542zv51a-e0vc5fva17480im9";
message.from = "";
// sender
message.sender = new Sender();
message.sender.name = "";
message.sender.avatar = "????";


message.text = "";
message.type = "";
var getPublicAccountInfo = viberWebhook.Post(message);


}
catch (Exception ex)
{
string s = ex.Message;
string t = ex.StackTrace;
// throw;
MessageBox.Show(s + " \r\n "
+ t);
}
}

#endregion Viber-Webhook-Api.


Questions
7. How to use the forum?
To address you, I use the message `@Mario Scheeren`.
You receive an alert if I use `@Mario Scheeren`?
0
Mario Scheeren7y ago
Oh no you misunderstood, you may send text like this:

using a WebClient or WebRequest doing a post to this url

https://chatapi.viber.com/pa/send_message
{

   "receiver":"01234567890A=",

   "min_api_version":1,

   "sender":{

      "name":"John McClane",

      "avatar":"http://avatar.example.com"

   },

   "tracking_data":"tracking data",

   "type":"text",

   "text":"Hello world!"

}

but any attachment will need a webspace to be stored / hosted on.
Excample:
var request = (HttpWebRequest)WebRequest.Create("https://chatapi.viber.com/pa/send_message");

request.ContentType = "application/json";

request.Method = "POST";

request.Headers.Add("X-Viber-Auth-Token", "445da6az1s345z78-dazcczb2542zv51a-e0vc5fva17480im9");



using (var streamWriter = new StreamWriter(request.GetRequestStream()))

{

    string json = @"{

       ""receiver"":""01234567890A="",

       ""min_api_version"":1,

       ""sender"":{

            ""name"":""John McClane"",

          ""avatar"":""http://avatar.example.com""

       },

       ""tracking_data"":""tracking data"",

       ""type"":""text"",

       ""text"":""Hello world!""

    }

    ";



    streamWriter.Write(json);

    streamWriter.Flush();

}



var response = (HttpWebResponse)request.GetResponse();

using (var streamReader = new StreamReader(response.GetResponseStream()))

{

    var result = streamReader.ReadToEnd();

}
+1
Ivan Climov7y ago
@Mario Scheeren

You want to say that I can not even send a text message?
If I did not understand you correctly and I can send a text message, how can I do this?
How to execute logic:
- connect to viber;
- send a text message;
?
0
Mario Scheeren7y ago
Looking at the API you will need a WebSpace for storing the Images since the API Massages take JSON and within those URLs to images - not actual image data.

So your goal, to achieve everything with a Windows application does not seem to work.

e.g. picture message
{
   "receiver":"01234567890A=",
   "min_api_version":1,
   "sender":{
      "name":"John McClane",
      "avatar":"http://avatar.example.com"
   },
   "tracking_data":"tracking data",
   "type":"picture",
   "text":"Photo description",
   "media":"http://www.images.com/img.jpg",
   "thumbnail":"http://www.images.com/thumb.jpg"
}
+1