this is the problem , please help to find me a way to use send message function
Twilio developer evangelist here.
Looks like you might have the latest version of the C# library installed there, but you're trying to use the code for the previous version.
I recommend you check out the documentation for sending messages with C#.
The example for using C# looks like this:
using System;
using Twilio;
using Twilio.Rest.Api.V2010.Account;
using Twilio.Types;
using System.Collections.Generic;
class Example
{
static void Main(string[] args)
{
const string accountSid = "YOUR_ACCOUNT_SID";
const string authToken = "YOUR_AUTH_TOKEN";
TwilioClient.Init(accountSid, authToken);
var to = new PhoneNumber(PHONE_NUMBER);
var message = MessageResource.Create(
to,
from: new PhoneNumber(TWILIO_NUMBER),
body: "Hello world!",
mediaUrl: mediaUrl);
Console.WriteLine(message.Sid);
}
}
Let me know if that helps at all.