/// <summary>
/// 登录状态
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_Load(object sender, EventArgs e)
{
//设置登陆界面
title.Visible = true;
user_label.Visible = true;
user_txt.Visible = true;
password_txt.Visible = true;
password_label.Visible = true;
detect_txt.Visible = true;
detect_pic.Visible = true;
bt_login.Visible = true;
bt_reset.Visible = true;
bt_add.Visible = false;
bt_del.Visible = false;
bt_search.Visible = false;
bt_correct.Visible = false;
bt_show.Visible = false;
label_add.Visible = false;
label_del.Visible = false;
label_modify.Visible = false;
label_search.Visible = false;
label_show.Visible = false;
//刷新验证码
CheckCode = Captcha.GetRandomNum(5);
detect_pic.Image = Captcha.CreateCodeImg(CheckCode);
}
/// <summary>
/// 重置用户名密码等
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void bt_reset_Click(object sender, EventArgs e)
{
CheckCode = Captcha.GetRandomNum(5);
detect_pic.Image = Captcha.CreateCodeImg(CheckCode);
//将当前密码与用户名、验证码内容清除
user_txt.Clear();
password_txt.Clear();
detect_txt.Clear();
user_txt.Focus();
}
/// <summary>
/// 登录按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void bt_login_Click(object sender, EventArgs e)
{
if (detect_txt.Text != CheckCode)
{
MessageBox.Show("验证码输入错误");
password_txt.Clear(); //将密码与验证码内容清除一下
detect_txt.Clear();
password_txt.Focus();
//并重新刷新一次验证码
CheckCode = Captcha.GetRandomNum(5);
detect_pic.Image = Captcha.CreateCodeImg(CheckCode);
}
else //验证用户名与密码是否正确
{
if (user_txt.Text == "admin" && password_txt.Text == "123456") //输入正确，进去到下一环节
{
MessageBox.Show("登录成功");
//将当前登录界面的内容隐藏，并将下一个界面的内容显示出来
title.Visible = true;
user_label.Visible = false;
user_txt.Visible = false;
password_txt.Visible = false;
password_label.Visible = false;
detect_txt.Visible = false;
detect_pic.Visible = false;
bt_login.Visible = false;
bt_reset.Visible = false;
bt_add.Visible = true;
bt_del.Visible = true;
bt_search.Visible = true;
bt_correct.Visible = true;
bt_show.Visible = true;
}
else //输入错误，重新输入
{
MessageBox.Show("用户名或密码错误，请重新输入");
//并重新刷新一次验证码
CheckCode = Captcha.GetRandomNum(5);
detect_pic.Image = Captcha.CreateCodeImg(CheckCode);
//将当前密码与用户名、验证码内容清除
user_txt.Clear();
password_txt.Clear();
detect_txt.Clear();
user_txt.Focus();
}
}
}
/// <summary>
/// 更换验证码
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void detect_pic_MouseClick(object sender, MouseEventArgs e)
{
//重新刷新一次验证码
CheckCode = Captcha.GetRandomNum(5);
detect_pic.Image = Captcha.CreateCodeImg(CheckCode);
}