private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text == "" || tbNewPassword.Text == "" || tbConfirmPassword.Text == "" || tbNewPassword.Text != tbConfirmPassword.Text)
            {
                MessageBox.Show("Please input field! Verify New Password and Confirm Password is the same!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
            else
            {
                try
                {
                    Entities1 mdl = new Entities1();
                    mdl.Connection.Open();
                    user user = new user();
                    user.user_name           = textBox1.Text;
                    user.user_password       = tbNewPassword.Text;
                    user.created_by          = Global.GlobalVar;
                    user.created_date        = DateTime.Now;
                    user.updated_by          = Global.GlobalVar;
                    user.updated_date        = DateTime.Now;
                    user.user_address        = "";
                    user.user_birth_date     = DateTime.Now;
                    user.user_birth_place    = "";
                    user.user_email          = "";
                    user.user_first_name     = "";
                    user.user_last_name      = "";
                    user.user_last_login     = DateTime.Parse("01/01/1970");
                    user.user_phone_number   = "";
                    user.user_photo_file     = "";
                    user.user_social_number  = "";
                    user.user_marital_status = "";
                    user.user_gender         = "";
                    user.user_group_id       = 1;
                    mdl.AddTousers(user);
                    mdl.SaveChanges();
                    mdl.Connection.Close();

                    MessageBox.Show("Success Add New User", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    Loading();
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message + " " + ex.InnerException + " " + ex.StackTrace, "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                }
            }
        }