public static bool resetLozinku(korisnik k, string novasifra)
{
if (proveraKorisnikaZaReset(k))
{
string sql = "UPDATE korisnik SET [sifra] = @sifra WHERE [korisnickoIme] = @KorisnickoIme";
SqlCommand cmd = new SqlCommand(sql, connect);
cmd.Parameters.Add("@sifra", SqlDbType.Char).Value = novasifra;
cmd.Parameters.Add("@KorisnickoIme", SqlDbType.Char).Value = k.korisnickoIme;
connect.Open();
int rows = cmd.ExecuteNonQuery();
connect.Close();
if (rows > 0)
{
return(true);
}
return(false);
}
else
{
return(false);
}
}
public static DataTable radniciBox(korisnik k)
{
connect.Open();
SqlDataAdapter sda = new SqlDataAdapter("SELECT ime, prezime, brtelefona, korisnickoIme FROM korisnik WHERE tip='R'", connect);
DataTable dt = new DataTable();
sda.Fill(dt);
connect.Close();
return(dt);
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
korisnik k = new korisnik();
DataTable dt = Base.radniciBox(k);
if (dt.Rows.Count > 0)
{
textBox1.Text = dt.Rows[0][0].ToString();
textBox2.Text = dt.Rows[0][1].ToString();
textBox3.Text = dt.Rows[0][2].ToString();
textBox5.Text = dt.Rows[0][4].ToString();
}
else
{
MessageBox.Show("Check username");
}
}
public static DataTable Login(korisnik k)
{
DataTable dt = new DataTable();
string sql = "SELECT * FROM korisnik WHERE korisnickoIme = @korisnickoIme AND sifra = @sifra ";
SqlCommand cmd = new SqlCommand(sql, connect);
cmd.Parameters.AddWithValue("@korisnickoIme", k.korisnickoIme);
cmd.Parameters.AddWithValue("@sifra", k.sifra);
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
connect.Open();
adapter.Fill(dt);
connect.Close();
return(dt);
}
private void button2_Click(object sender, EventArgs e)
{
try
{
if (textBox1.Text == "" || textBox2.Text == "" || textBox5.Text == "" || textBox6.Text == "")
{
MessageBox.Show("You must fill in all fields");
}
else
{
korisnik k = new korisnik();
k.korisnickoIme = textBox5.Text;
k.sifra = textBox6.Text;
string allowedchar = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
if (textBox1.Text.Equals(textBox2.Text))
{
if (!textBox1.Text.All(allowedchar.Contains))
{
MessageBox.Show("Check password");
}
else if (k.promenaLozinke(textBox1.Text))
{
MessageBox.Show("Password changed successfully");
}
else
{
MessageBox.Show("Failed password change");
}
}
else
{
MessageBox.Show("Incorrectly confirmed password");
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
//private static string hashLozinka(string lozinka)
//{
// using (MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider())
// {
// UTF8Encoding utf8 = new UTF8Encoding();
// byte[] data = md5.ComputeHash(utf8.GetBytes(lozinka));
// return Convert.ToBase64String(data);
// }
//}
public static bool ProveraKorisnika(korisnik k)
{
string sql = "SELECT korisnickoIme FROM korisnik";
SqlCommand cmd = new SqlCommand(sql, connect);
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
connect.Open();
DataTable dt = new DataTable();
adapter.Fill(dt);
for (int i = 0; i < dt.Rows.Count; i++)
{
if (dt.Rows[i][0].ToString() == k.korisnickoIme)
{
connect.Close();
return(true);
}
}
connect.Close();
return(false);
}
private static bool proveraKorisnikaZaReset(korisnik k)
{
connect.Open();
string sql = "SELECT * FROM korisnik WHERE korisnickoIme = @KorisnickoIme AND sifra = @sifra";
SqlCommand cmd = new SqlCommand(sql, connect);
cmd.Parameters.AddWithValue("@KorisnickoIme", k.korisnickoIme);
cmd.Parameters.AddWithValue("@sifra", k.sifra);
SqlDataReader reader = cmd.ExecuteReader();
if (reader.Read())
{
connect.Close();
return(true);
}
else
{
connect.Close();
return(false);
}
}
private void button1_Click(object sender, EventArgs e)
{
korisnik k = new korisnik();
k.korisnickoIme = textBox5.Text;
string allowedchar = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
k.sifra = textBox4.Text;
if (textBox1.Text == "" || textBox2.Text == "" || textBox3.Text == "" || textBox4.Text == "" || textBox5.Text == "")
{
MessageBox.Show("You must fill in all the fields!");
}
else if (k.proveraKorisnika())
{
MessageBox.Show("Username already exists.");
}
else if (!textBox5.Text.All(allowedchar.Contains))
{
MessageBox.Show("Check the password.You have entered forbidden characters");
}
else if (!textBox4.Text.All(allowedchar.Contains))
{
MessageBox.Show("Check the username.You have entered forbidden characters!");
}
else
{
try
{
Base.dodavanjeRadnika(textBox1.Text, textBox2.Text, textBox3.Text, textBox4.Text, textBox5.Text);
MessageBox.Show("Successful");
}
catch
{
MessageBox.Show("Employee already exists!");
}
}
}
private void button1_Click(object sender, EventArgs e)
{
korisnik k = new korisnik();
k.korisnickoIme = textBox1.Text;
k.sifra = textBox2.Text;
DataTable dt1 = Base.UlogujAdmina(k);
DataTable dt = Base.UlogujRadnika(k);
string allowedchar = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
try
{
if (textBox1.Text == "" || textBox2.Text == "")
{
MessageBox.Show("Morate popuniti sva polja");
}
else if (!textBox2.Text.All(allowedchar.Contains))
{
MessageBox.Show("Proverite lozinku");
}
else
{
if (k.proveraKorisnika())
{
if (k.tip == "A")
{
if (dt1.Rows.Count == 1)
{
this.Hide();
Admin a = new Admin();
a.Show();
}
else
{
MessageBox.Show("Neispravno ste uneli lozinku.");
}
}
else
{
if (dt.Rows.Count == 1)
{
this.Hide();
User f = new User();
f.Show();
}
else
{
MessageBox.Show("Neispravno ste uneli lozinku.");
}
}
}
else
{
MessageBox.Show("Ne postoji korisnik sa unesenim korisničkim imenom");
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void button1_Click(object sender, EventArgs e)
{
string allowedchar = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
if (textBox1.Text == "" || textBox2.Text == "")
{
MessageBox.Show("You must fill in all fields");
}
else if (!textBox2.Text.All(allowedchar.Contains))
{
MessageBox.Show("Check the password");
}
else
{
korisnik k = new korisnik();
k.korisnickoIme = textBox1.Text;
k.sifra = textBox2.Text;
DataTable dt = Base.Login(k);
try
{
if (k.proveraKorisnika())
{
if (dt.Rows.Count == 1)
{
switch (dt.Rows[0][5] as string)
{
case "A":
{
k.korisnickoIme = dt.Rows[0][4].ToString();
this.Hide();
Admin a = new Admin();
a.Show();
break;
}
case "R":
{
k.korisnickoIme = dt.Rows[0][4].ToString();
User u = new User();
u.Show();
break;
}
default:
{
MessageBox.Show("You entered your username or password incorrectly.");
break;
}
}
}
else
{
MessageBox.Show("You entered your username or password incorrectly.");
}
}
else
{
MessageBox.Show("There is no user with the username entered.");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
