private void BtnLogin_Click(object sender, EventArgs e)
        {
            string username = txtUsername.Text;
            string password = txtPassword.Text;

            if (username == "")
            {
                MessageBox.Show("Username can not be empty. Please enter your username.");
            }
            else if (password == "")
            {
                MessageBox.Show("Password can not be empty. Please enter the password.");
            }
            else
            {
                dbAcccess           acccess       = new dbAcccess();
                List <adminstrator> adminstrators = acccess.checkAdminstrator(username, password);
                if (adminstrators.Any())
                {
                    foreach (adminstrator admin in adminstrators)
                    {
                        MessageBox.Show(admin.ToString());
                    }
                }
                else
                {
                    MessageBox.Show("There is no user with the given details. Please provide correct credentials.");
                }
            }
        }