Exemple en C# d'envoi de SMS unitaire

send_sms_unit.cs

static void Main(string[] args)
{
    // Création du XML à poster
    var xml = @"<request login=""your-login"" password=""your-password"">
                <push media=""sms"" type=""on_demand"" name=""Test API Sms C#"">
                    <message type=""text"">Mon premier test sms</message>
                    <recipients>
                        <add target=""+33 600000000""/>
                    </recipients>
                </push>
                </request>";

    // Construction et envoi de la requête HTTP
        WebRequest request = WebRequest.Create("http://api.express-mailing.com/transac/api.ashx");
        request.Method = "POST";
        request.ContentType = "application/x-www-form-urlencoded";
        byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(xml);
        request.ContentLength = byteArray.Length;
        System.IO.Stream dataStream = request.GetRequestStream();
        dataStream.Write(byteArray, 0, byteArray.Length);
        dataStream.Close();

        WebResponse web_response = request.GetResponse();
        var stream_response = web_response.GetResponseStream();
        System.IO.StreamReader reader = new System.IO.StreamReader(stream_response);
        string response = reader.ReadToEnd();

        Console.WriteLine(response);
}