예제 #1
0
    protected void btnLogin_Click(object sender, EventArgs e)
    {
        Application.Lock();
        int    P_int_num;      //在线人数
        string P_str_name;     //登录用户
        string P_str_names;    //已在线的用户名

        string[] P_str_user;   //用户在线数组
                 P_int_num = int.Parse(Application["userNum"].ToString());
        if (TextBox1.Text == "")
        {
            Response.Write("<script>alert('用户名不能为空')</script>");
            TextBox1.Focus();
        }
        else
        {
            P_str_name  = TextBox1.Text.Trim();
            P_str_names = Application["user"].ToString();
            P_str_user  = P_str_names.Split(',');
            for (int i = 0; i <= P_int_num - 1; i++)
            {
                if (P_str_name == P_str_user[i].Trim())
                {
                    int P_int_judge = 1;
                    Response.Redirect("Login.aspx?value=" + P_int_judge);
                }
            }
            if (P_int_num == 0)
            {
                Application["user"] = P_str_name.ToString();
            }
            else
            {
                Application["user"] = Application["user"] + "," + P_str_name.ToString();
            }
            P_int_num += 1;
            Application["userNum"] = P_int_num;
            Session["userName"]    = TextBox1.Text.Trim();
            Application.UnLock();
            Response.Redirect("Default.aspx");
        }
    }
예제 #2
0
    protected void Button1_Click(object sender, EventArgs e)
    {
        string strsql_query = "";

        if (IDBox.Text != string.Empty && passwdBox.Text != string.Empty)
        {
            string ID2    = IDBox.Text.Trim().ToString();
            string passwd = passwdBox.Text.Trim().ToString();

            string        strcon = "Data Source=(local);Initial Catalog=课设;Integrated Security=True";
            SqlConnection conn   = new SqlConnection(strcon);

            conn.Open();
            if (stuButton.Checked)
            {
                strsql_query = string.Format("select * from Tb_SLogin where  Sno='{0}' and Spassword='******'", ID2, passwd);
            }
            else if (adminButton.Checked)
            {
                strsql_query = string.Format("select * from Tb_Admin where  id='{0}' and Password='******'", ID2, passwd);
            }
            SqlCommand    cmd_query = new SqlCommand(strsql_query, conn);
            SqlDataReader dr        = cmd_query.ExecuteReader();
            if (dr.HasRows)
            {
                dr.Read();
                if (stuButton.Checked)
                {
                    Login.name = dr["Sname"].ToString();

                    welcome         = "欢迎  " + name + "  同学登录本系统";
                    Session["name"] = name;
                }
                else if (adminButton.Checked)
                {
                    Login.name = dr["id"].ToString();
                }
                dr.Close();


                if (stuButton.Checked)
                {
                    Session["pass"]  = passwd;
                    Session["IDnew"] = ID2;

                    Response.Write(welcome);
                    // MessageBox.Show(welcome);

                    Application.Lock();
                    int      P_int_num;   //在线人数
                    string   P_str_name;  //登录用户
                    string   P_str_names; //已在线的用户名
                    string[] P_str_user;  //用户在线数组
                    P_int_num = int.Parse(Application["userNum"].ToString());


                    P_str_name  = IDBox.Text.Trim();
                    P_str_names = Application["user"].ToString();
                    P_str_user  = P_str_names.Split(',');
                    for (int i = 0; i <= P_int_num - 1; i++)
                    {
                        if (P_str_name == P_str_user[i].Trim())
                        {
                            int P_int_judge = 1;
                            Response.Redirect("Login.aspx?value=" + P_int_judge);
                        }
                    }
                    if (P_int_num == 0)
                    {
                        Application["user"] = P_str_name.ToString();
                    }
                    else
                    {
                        Application["user"] = Application["user"] + "," + P_str_name.ToString();
                    }
                    P_int_num += 1;
                    Application["userNum"] = P_int_num;
                    Session["userName"]    = IDBox.Text.Trim();
                    Application.UnLock();


                    Response.Redirect("StudentPage.aspx");
                }
                else
                {
                    //adminPage main = new adminPage();
                    // main.Show();
                    Response.Redirect("AdminPage.aspx");
                }
                Visible = false;
            }
            else
            {
                Response.Write("<script>alert('用户名或密码错误')</script>");
                //   MessageBox.Show("用户名或密码错误!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
                passwdBox.Focus();
            }
        }
        else
        {
            Response.Write("<script>alert('用户名或密码不能为空')</script>");
            //MessageBox.Show("用户名或密码不能为空!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }