当我已经在按钮点击事件处理程序中时，如何等待提交按钮被点击

如果密码不正确，我想在do循环中等待再次单击提交按钮。

    // Try/Catch block looks for issues with database connection
    try
    {
        int passwordtest = 0;
        //checks that password entries are the same
        do
        {
            //*******WAIT HERE FOR SUBMIT BUTTON TO BE CLICKED AGAIN

                if (PasswordText.Text.Equals(ReEnterPasswordText.Text))
                {
                    MessageBox.Show("Passwords Match.");
                    passwordtest = 0;
                }
                else
                {
                    passwordtest = passwordtest + 1;
                    MessageBox.Show("Passwords do not match. Please try again.");
                    PasswordText.Clear();
                    ReEnterPasswordText.Clear();
                }
        } while (passwordtest == 1);
        conDataBase.Open();
        myReader = cmdDataBase.ExecuteReader();
        MessageBox.Show("Saved");
        while (myReader.Read())
        {

        }
    }
    catch(Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}