private void LoginButton(object sender, EventArgs e)
{//catalogu değiştir.
connection = "Server=localhost;port=5432;Database =bikeBookv1;username=postgres;Password=locklock";
var conn = new NpgsqlConnection(connection);
conn.Open();
var cmd = new NpgsqlCommand("select username,password,usertype from users where username ='******' and password='******';", conn);
{
var reader = cmd.ExecuteReader();
while (reader.Read())
{
username = (String)reader.GetValue(0);
password = (String)reader.GetValue(1);
usertype = (String)reader.GetValue(2);
}
Console.WriteLine(username + " " + password + " " + usertype);
if (username == "" && password == "")
{
MessageBox.Show("username and password must be valid ,try again later");
}
else if (usertype == "admin")
{
AdminPanel adminPanel = new AdminPanel(username, password);
adminPanel.Show();
// this.Close();
}
else if (usertype == "client")
{
ClientPanel clientPanel = new ClientPanel(username, password);
clientPanel.Show();
// this.Close();
}
else
{
MessageBox.Show("user not found.");
}
}
// kullanici admin ise admin panel goruntulenir
// kullanici musteri ise musteri panel goruntulenir
}
public void signButtoClicked(object sender, EventArgs e)
{
connection = "Server=localhost;port=5432;Database =bikeBookv1;username=postgres;Password=locklock";
NpgsqlConnection conn = new NpgsqlConnection(connection);
conn.Open();
username = null;
fname = FirstNametextBox.Text;
lname = LastNameTextBox.Text;
password = passwordTextBox.Text;
if (usernamatextBox.Text == "" || fname == "" || lname == "" || password == "")
{
MessageBox.Show("mandatory fields required");
}
else
{
NpgsqlCommand cmd = new NpgsqlCommand("select username from users where username ='******';", conn);
{
var reader = cmd.ExecuteReader();
while (reader.Read())
{
username = (String)reader.GetValue(0);
Console.WriteLine(username);
}
conn.Close();
Console.WriteLine("çıktı" + username);
Console.WriteLine((username != null) && (username.Equals(usernamatextBox.Text)));
Console.WriteLine(usernamatextBox.Text);
if ((username != null))// kullanıcı adıın daha önce alınması durumu
{
usernamatextBox.ForeColor = Color.Red;
importantLabel.Text = "username was took by another person ,please change username";
Console.WriteLine("dgffsrbfb");
}
//alanların uzunluk kontrolü
else if (password.Length > 20 || usernamatextBox.Text.Length > 9 || fname.Length > 50 || lname.Length > 50 || password.Length > 20)//kullanıcı kaydı yapılır.
{
MessageBox.Show("length of that field must be like that ;username:9 ,first name 50 ,last name 50 ,password 20 ");
}
else if (termRadioButton.Checked.Equals(true)) // user aggreementın kabul edilmasiyle kullanıcı kaydı yapılır.
{
conn.Open();
NpgsqlCommand insertusercmd = new NpgsqlCommand("insert into users values('" + usernamatextBox.Text + "','" + fname + "','" + lname + "','" + password + "','admin')", conn);
NpgsqlCommand insertAdmncmd = new NpgsqlCommand("insert into admin values('" + usernamatextBox.Text + "')", conn);
insertusercmd.ExecuteNonQuery();
conn.Close();
conn.Open();
insertAdmncmd.ExecuteNonQuery();
conn.Close();
AdminPanel newAdminPanel = new AdminPanel(usernamatextBox.Text, password);
newAdminPanel.Show();
this.Close();
}
else
{
MessageBox.Show("user aggrement must be read and accepted to use that system.");
}
conn.Close();
}
}
}