老师要求做一个成绩管理系统,要求实现分类登入,可是这个cheng'xu如果用户是学生,即使comboBox不选学生也能顺利登入,admin就没这个问题,请教大佬是为什么?
private void button1_Click(object sender, EventArgs e)
{
string sUser = txtUser.Text.ToString();
string sPassword = txtPassword.Text.ToString();
if (sUser == "admin" && sPassword == "1234" && comboBoxLeixing.Text == "管理员")
{
Menuadmin main = new Menuadmin();
main.Show();
this.Hide();
}
if (sUser == "徐光睿" || sUser == "曹广" || sUser == "曹子岳" || sUser == "陈思佳" || sUser == "陈旭" || sUser == "黄文广" ||
sUser == "雷章树" || sUser == "刘晴晴" || sUser == "齐世勐" || sUser == "沈彬" || sUser == "帅兴" || sUser == "孙权伟" ||
sUser == "王恒" || sUser == "王瑞" || sUser == "向猛" || sUser == "张国梁" || sUser == "张宗友" || sUser == "张舒敏"
&& sPassword == "1234" && comboBoxLeixing.Text == "学生")
{
Menustudent main = new Menustudent();
main.Show();
this.Hide();
}
if (sUser == "刘兆良" || sUser == "龙隆" || sUser == "冯伟" || sUser == "刘善勇" ||
sUser == "印森林" || sUser == "程乐利" || sUser == "刘岩" || sUser == "赵俊威"
&& sPassword == "1234" && comboBoxLeixing.Text== "教师")
{
Menuteacher main = new Menuteacher();
main.Show();
this.Hide();
}
else
label3.Text = "用户名或密码错误,请重新输入!";
}