【年少的风】C#小学生算式自动生成器1

本软件基于C#，SQL Server，功能，用户注册，登录，输入希望生成试题的总数n点击“生成试题”按钮便可随机生成n道加减乘除的算式。答题过程总可点击“当前得分”查看已答题目是否正确。中途可退出。下次登录后点击“继续答题”按钮便可继续上次的答题。

注册面板对应的代码如下：

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using System.Data.SqlClient;

namespace BriansApplication1
{
    public partial class Register : Form
    {
        public Register()
        {
            InitializeComponent();
        }

        private void tbROK_Click(object sender, EventArgs e)
        {
            string mysql, mystr;
            SqlConnection myconn = new SqlConnection();
            SqlCommand mycmd = new SqlCommand();
            mystr = "Data Source=.\\SQLEXPRESS;Initial Catalog=Student;Integrated Security=True";
            myconn.ConnectionString = mystr;
            myconn.Open();

            mysql = string.Format("insert into student ([id],[name]) values('" +  tbRID.Text + "','" + tbRName.Text + "') ");

            mycmd.CommandText = mysql;
            mycmd.Connection = myconn;

                SqlDataReader myreader = mycmd.ExecuteReader();
                if (!myreader.Read())
                {
                    MessageBox.Show("注册成功！");
                }
                else
                {
                    MessageBox.Show("注册失败，再次尝试！");
                }




            myconn.Close();

            Login login = new Login();
            login.tbID.Text = this.tbRID.Text;
            login.tbName.Text = this.tbRName.Text;
            login.Show();

            this.Dispose();
        }

        private void Register_Load(object sender, EventArgs e)
        {

        }

        private void btRCancel_Click(object sender, EventArgs e)
        {
            this.Dispose();
            Login login = new Login();
            login.Visible = true;

        }
    }
}

登录界面对应的代码如下：

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;

using System.Data.SqlClient;
using System.Data.OleDb;

namespace BriansApplication1
{
    public partial class Login : Form
    {

        public Login()
        {
            InitializeComponent();
        }

        private void btLogin_Click(object sender, EventArgs e)
        {

            if (tbID.Text == "")
            {
                MessageBox.Show("学号不能为空，请再次输入！");
            }
            else if (tbName.Text == "")
            {
                MessageBox.Show("密码不能为空，请再次输入！");
            }
            else
            {
                string mysql, mystr;
                SqlConnection myconn = new SqlConnection();
                SqlCommand mycmd = new SqlCommand();
                mystr = "Data Source=.\\SQLEXPRESS;Initial Catalog=Student;Integrated Security=True";
                myconn.ConnectionString = mystr;
                myconn.Open();
                mysql = string.Format("select test from student where student.id='{0}' and student.name='{1}'", tbID.Text.Trim(), tbName.Text.Trim());
                mycmd.CommandText = mysql;
                mycmd.Connection = myconn;
                SqlDataReader myreader = mycmd.ExecuteReader();
                if (myreader.Read())
                {
                    TestPaper test = new TestPaper(tbID.Text);
                    try
                    {
                        string temp = myreader.GetString(0);
                        if(temp != null)
                        {
                            test.btCreate.Hide();
                            test.tbCount.Enabled = false;
                        }
                    }
                    catch
                    {
                        test.btContinue.Hide();
                    }

                    test.Show();
                }
                else
                {
                    MessageBox.Show("用户不存在，请注册！");
                }
                myreader.Close();
                myconn.Close();
            }


        }

        private void btClose_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)//注册
        {

            this.Visible = false;
            Register register = new Register();
            register.Show();


        }
        private void Form1_Load(object sender, EventArgs e)
        {
        }
    }
}