public string SQLlogin()
        {
                String user = textBox1.Text;
                String pass = textBox2.Text;

                String connectionString = "Data Source =.; Initial Catalog =syntic; Integrated Security =SSPI;";
                     //// SqlCommand cmd = new SqlCommand("SELECT username,password FROM users WHERE username='" + textBox1.Text + "' and password='" + maskedTextBox1.Text + "'", lgnConnection);


                SqlConnection connection = new SqlConnection(connectionString);


                connection.Open();


                SqlCommand command = new SqlCommand();
                command.Connection = connection;
                command.CommandText = ("SELECT * FROM dbo.daten WHERE username='" + user + "' and passwort='" + pass + "'");
                SqlDataReader reader = command.ExecuteReader();


                if (reader.HasRows)
                {
                    while (reader.Read())
                    {

                        String vorname = reader["vorname"] + "";
                        String nachname = reader["nachname"] + "";
                        String usersql = reader["Username"] + "";
                        String pwsql = reader["Passwort"] + "";
                        String geld_string = reader["Geld"] + "";
                        int geld = Convert.ToInt32(geld_string);
                        String HP_full_string = reader["HP_Full"] + "";
                        int HP_full = Convert.ToInt32(HP_full_string);
                        String Def_string = reader["Def"] + "";
                        int Def = Convert.ToInt32(Def_string);
                        String Exp_string = reader["Exp"] + "";
                        int Exp = Convert.ToInt32(Exp_string);
                        String spielername = reader["spielername"] + "";
                        String email = reader["email"] + "";
                        String HP_string = reader["HP"] + "";
                        int HP = Convert.ToInt32(HP_string);


                        if (textBox1.Text == usersql && textBox2.Text == pwsql)
                        {
                            //Neue Form !

                            new Form2().Show();
                            this.Hide();


                        }
                        else if (textBox1.Text != usersql || textBox2.Text != pwsql)
                        {

                        }
                      }
                    }

                else
                {
                    MessageBox.Show("Passwort oder User falsch", "Error", MessageBoxButtons.OK);
                }


                    return null;
             }