private void btnback_Click(object sender, EventArgs e)
{
this.Hide();
controller form = new controller();
form.Show();
}
private void btnsubmit_Click_1(object sender, EventArgs e)
{
uID = txtuser.Text;
uPswd = txtpswd.Text;
if (uID == "")
{
MessageBox.Show("请输入用户名！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else if (uPswd == "")
{
MessageBox.Show("请输入密码！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else if (power == 0)
{
MessageBox.Show("请选择权限！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
SqlConnection conn = new SqlConnection("Data Source = (local);Initial Catalog = one;Integrated Security=SSPI");
conn.Open();
SqlCommand cmd = new SqlCommand("select * from login where Username ='" + uID + "'and password ='******'", conn);
int num = Convert.ToInt32(cmd.ExecuteScalar());
if (num == power)
{
if (power == 1)
{
app.value = 1;
conn.Close();
MessageBox.Show("管理员登录成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Hide();
controller form = new controller();
form.Show();
}
else if (power == 2)
{
SqlCommand cmd1 = new SqlCommand("select * from stu_infor where 姓名 ='" + uID + "'", conn);
app.value = Convert.ToInt32(cmd1.ExecuteScalar());
conn.Close();
MessageBox.Show("学生登录成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Hide();
student form = new student();
form.Show();
}
else
{
SqlCommand cmd1 = new SqlCommand("select * from tea_infor where 姓名 ='" + uID + "'", conn);
app.value = Convert.ToInt32(cmd1.ExecuteScalar());
conn.Close();
MessageBox.Show("教师登录成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Hide();
teacher form = new teacher();
form.Show();
}
}
else
{
conn.Close();
MessageBox.Show("用户名或密码错误", "警告", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtuser.Text = null;
txtpswd.Text = null;
}
}
}
