Winform基础：单选radioButton和多选checkBox控件

单选radioButton可以用GroupBox容器分组。

属性：
Checked：指示组件是否处于选中状态。

登录界面：

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void label1_Click(object sender, EventArgs e)
        {
        }
        private void label2_Click(object sender, EventArgs e)
        {
        }
        private void btnLogin_Click(object sender, EventArgs e)
        {
            string name = txtAccount.Text.Trim();
            string pwd = txtPwd.Text;
            if (radioButtonStudent.Checked)  //选择的是学生
            {
                if (name== "student" && pwd== "student")
                {
                    MessageBox.Show("登陆成功");
                    this.Close();
                }
                else
                {
                    MessageBox.Show("账户或密码错误");
                    txtAccount.Clear();
                    txtPwd.Clear();
                    txtAccount.Focus();
                }
            }
            else if(radioButtonTeacher.Checked)  //选择的是老师
            {
                if (name == "teacher" && pwd == "teacher")
                {
                    MessageBox.Show("登陆成功");
                    this.Close();
                }
                else
                {
                    MessageBox.Show("账户或密码错误");
                    txtAccount.Clear();
                    txtPwd.Clear();
                    txtAccount.Focus();
                }
            }
            else
            {
                MessageBox.Show("请选择是学生还是老师！");
            }
        }
        private void btnReset_Click(object sender, EventArgs e)
        {
            txtAccount.Clear();
            txtPwd.Clear();
            txtAccount.Focus();
        }
        private void btnQuit_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }