问将数据从表单1移至其他表单

EN

public partial class Login : Form
    {
        UserForm _userform = new UserForm();
        Admin _Adminform = new Admin();

        public Login()
        {
            InitializeComponent();
        }

        private void loginscs_Click(object sender, EventArgs e)
        {
            try
            {
                string userNameText = txtUser.Text;
                string passwordText = txtPass.Text;
                string isAdmin = "yes";
                string isNotAdmin = "no";
                if (!(string.IsNullOrEmpty(txtUser.Text)) && !(string.IsNullOrEmpty(txtPass.Text)))
                {
                    SqlConnection SCScon = new SqlConnection();
                    SCScon.ConnectionString = "Data Source=PEWPEWDIEPIE\\SQLEXPRESS;Initial Catalog=master;Integrated Security=True";
                    SqlCommand cmd = new SqlCommand("SELECT ISNULL(SCSID, '') AS SCSID, ISNULL(SCSPass,'') AS SCSPass, ISNULL(isAdmin,'') AS isAdmin FROM SCSID WHERE SCSID='" + txtUser.Text + "' and SCSPass='" + txtPass.Text + "'", SCScon);
                    SCScon.Open();
                    SqlDataReader dr = cmd.ExecuteReader();
                    if (dr.Read())
                    {
                        if (this.CompareStrings(dr["SCSID"].ToString(), txtUser.Text) &&
                            this.CompareStrings(dr["SCSPass"].ToString(), txtPass.Text) &&
                            this.CompareStrings(dr["isAdmin"].ToString(), isAdmin))
                        {
                            MessageBox.Show("Hello " + txtUser.Text, "Admin", MessageBoxButtons.OK, MessageBoxIcon.Information);
                            _Adminform.Show();
                            this.Hide();
                        }
                        else if (this.CompareStrings(dr["SCSID"].ToString(), txtUser.Text) &&
                            this.CompareStrings(dr["SCSPass"].ToString(), txtPass.Text) &&
                            this.CompareStrings(dr["isAdmin"].ToString(), isNotAdmin))
                        {
                            MessageBox.Show("Welcome " + txtUser.Text, "User");
                            _userform.Show();
                            this.Hide();
                        }
                    }
                    else
                    {
                        MessageBox.Show("Wrong ID/Pass");
                    }
                    SCScon.Close();
                }
            }

            catch (Exception ex)
            {
                MessageBox.Show("error2" + ex);
            }
        }

        private void Login_Load(object sender, EventArgs e)
        {

        }

        private bool CompareStrings(string string1, string string2)
        {
            return String.Compare(string1, string2, true, System.Globalization.CultureInfo.InvariantCulture) == 0 ? true : false;
        }
    }