这是一个使用C#编程语言开发的学生管理系统，主要功能包括成绩管理和课程选择等，旨在帮助学校或教育机构更高效地进行学生学业信息的处理和分析。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace XKGLXT
{
public partial class Login : Form
{
Model.User mdl_ui = new Model.User();
BLL.User bll_ui = new BLL.User();
Model.Student mdl_st = new Model.Student();
BLL.Student bll_st = new BLL.Student();
BLL.Right bll_rt = new BLL.Right();
public Login()
{
InitializeComponent();
}
private void BtnLogin_Click(object sender, EventArgs e)
{
if (cbxRole.Text == 管理员)
{
mdl_ui.UserID = TxtUser.Text;
mdl_ui.Pwd = TxtPass.Text;
Model.Login.UserNo = TxtUser.Text;
if (bll_ui.login(mdl_ui) > 0)
{
Model.Login.flag = true;
MessageBox.Show(登录成功);
this.Close();
}
else
{
Model.Login.flag = false;
MessageBox.Show(用户名或密码错误！);
}
}
if(cbxRole.Text == 教师)
{
mdl_ui.UserID = TxtUser.Text;
mdl_ui.Pwd = TxtPass.Text;
Model.Login.UserNo = TxtUser.Text;
if (bll_ui.login(mdl_ui) > 0)
{
Model.Login.flag = true;
MessageBox.Show(登录成功);
this.Close();
}
else
{
Model.Login.flag = false;
MessageBox.Show(用户名或密码错误！);
}
}
if(cbxRole.Text == 学生)
{
mdl_st.StuNo = TxtUser.Text;
mdl_st.Pwd = TxtPass.Text;
Model.Login.StuNo = TxtUser.Text;
Model.Login.Role=cbxRole.SelectedValue.ToString();
MessageBox.Show(Model.Login.Role);
if (bll_st.Stulogin(mdl_st) > 0)
{
Model.Login.flag = true;
MessageBox.Show(登录成功);
this.Close();
}
else
{
Model.Login.flag = false;
MessageBox.Show(用户名或密码错误！);
}
}
if (cbxRole.Text == --请选择角色--)
{
MessageBox.Show(请选择角色才能进入系统！, 选课系统提示！);
}
}
private void BtnExit_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void LoadRoleData()
{
DataTable dt = new DataTable();
dt = bll_rt.GetAllData();
DataRow row = dt.NewRow();
row[RoleName] = --请选择角色--;
row[RoleId] = -1;
dt.Rows.InsertAt(row, 0);
cbxRole.ValueMember = RoleId;
cbxRole.DisplayMember = RoleName;
cbxRole.DataSource = dt;
}
private void Login_Load(object sender, EventArgs e)
{
LoadRoleData();
}
}
}
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