async public void GenerateOTP_Click(object sender, EventArgs e)
{
btnGenerateOTP.IsEnabled = false;
await this.Navigation.PushModalAsync(new Loading());
try
{
getOTP getOtp = new getOTP();
if (string.IsNullOrEmpty(entryEmail.Text) || string.IsNullOrWhiteSpace(entryEmail.Text))
{
await DisplayAlert(" nWorksLeaveApp", "Invalid Email Address!", "OK");
}
else
{
getOtp.uid = userid;
getOtp.email = entryEmail.Text;
var json = JsonConvert.SerializeObject(getOtp);
var content = new StringContent(json, Encoding.UTF8, "application/json");
HttpClient Client = new HttpClient();
HttpResponseMessage response = null;
response = await Client.PostAsync(ColorResources.baseUrl + "sendOTP", content);
if (response.IsSuccessStatusCode)
{
var content1 = await response.Content.ReadAsStringAsync();
var res = JsonConvert.DeserializeObject <string>(content1);
Debug.WriteLine(res.ToString());
if (res.Length == 7)
{
label_isOTPGenerate.Text = "OTP is successfully sent on your email address!";
OTP = res.ToString();
}
else
{
label_isOTPGenerate.Text = "Email Sending Failure! Try Again!";
}
}
}
}
catch (Exception ex)
{
await DisplayAlert(" nWorksLeaveApp", "Unable to connect server, Try again!", "OK");
Debug.WriteLine(ex.ToString());
}
btnGenerateOTP.IsEnabled = true;
await this.Navigation.PopModalAsync();
}
public string send_otp(getOTP obj)
{
string otp = string.Empty;
try
{
//OTP Generation
string alphabets = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
string small_alphabets = "abcdefghijklmnopqrstuvwxyz";
string numbers = "1234567890";
string characters = numbers;
characters += alphabets + small_alphabets + numbers;
int length = 7;
for (int i = 0; i < length; i++)
{
string character = string.Empty;
do
{
int index = new Random().Next(0, characters.Length);
character = characters.ToCharArray()[index].ToString();
} while (otp.IndexOf(character) != -1);
otp += character;
}
//
//To make OTP one time, store it in table while its not used.
string q0 = "select * from recoverpwdstatus where uid='" + obj.uid + "';";
MySqlCommand cmd0 = new MySqlCommand(q0, conn);
conn.Open();
Int32 count = Convert.ToInt32(cmd0.ExecuteScalar());
conn.Close();
if (count > 0)
{
string q2 = "update recoverpwdstatus set guidcode='" + otp + "' where uid='" + obj.uid + "';";
MySqlCommand cmd2 = new MySqlCommand(q2, conn);
conn.Open();
MySqlDataReader rdr2 = cmd2.ExecuteReader();
conn.Close();
}
else
{
string q = "insert into recoverpwdstatus values ('" + obj.uid.ToString() + "','" + otp + "');";
MySqlCommand cmd = new MySqlCommand(q, conn);
conn.Open();
MySqlDataReader rdr = cmd.ExecuteReader();
conn.Close();
}
//
//Get user full name
string userFullname = "";
string query = "select fname,lname from nworksuser where uid='" + obj.uid + "';";
MySqlCommand cmd1 = new MySqlCommand(query, conn);
MySqlDataReader rdr1;
conn.Open();
rdr1 = cmd1.ExecuteReader();
while (rdr1.Read())
{
userFullname = rdr1.GetString("fname") + " " + rdr1.GetString("lname");
}
conn.Close();
//
//Send OTP via email
NetworkCredential login;
SmtpClient client;
MailMessage msg;
login = new NetworkCredential("*****@*****.**", "password");
client = new SmtpClient("smtp.1and1.com");
client.Port = Convert.ToInt32(25);
client.EnableSsl = true;
client.Credentials = login;
msg = new MailMessage {
From = new MailAddress("*****@*****.**", "nWorks Employee", Encoding.UTF8)
};
msg.To.Add(new MailAddress(obj.email)); //Email to
msg.Subject = "Recover LeaveApp Password"; //Subject
string strBody = string.Empty;
strBody += "<html><head></head><body><h4>Hi " + userFullname + ",\n We got a request to reset your LeaveApp password.\n To reset your password use following One Time Password. If you did not forget your password, please ignore this email.</h4>\n\n<h1>" + otp + "\n\n</h1>";
strBody += Environment.NewLine;
strBody += "<br/>Thanks.";
msg.Body = strBody;
msg.BodyEncoding = Encoding.UTF8;
msg.IsBodyHtml = true;
msg.Priority = MailPriority.Normal;
msg.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
System.Diagnostics.Debug.WriteLine("Email is going to sent-----");
client.Send(msg);
System.Diagnostics.Debug.WriteLine("Email is sent-----");
//return string.Format("Request is successfull...! Email sent!");
return(otp);
}
catch (Exception ex)
{
return(string.Format("Email sending failed! Please Try Again!"));
}
//
}