第七次作业

具体设计思路：

第一步：在上一次的数据库中建表repair_info；

第二步：编写代码。

代码实现：

Form1窗体

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;
using System.Data.SqlClient;

namespace 登陆
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public static string name;
        private void button1_Click(object sender, EventArgs e)
        {
            SqlConnection conn = new SqlConnection("Data Source=LENOVO-PC\DATA;Initial Catalog=I:\REPAIR.MDF;Integrated Security=True");
            string sql = "select passWord from user_info where userName='"+txtuser.Text+"'";
            SqlCommand comm = new SqlCommand(sql, conn);
            conn.Open();
            SqlDataReader reader = comm.ExecuteReader();
            if (!reader.Read())
            {
                label3.Visible = true;
                label3.Text = "用户名不存在！";
            }
            else
            {
                if (reader["passWord"].ToString().Trim() == txtpwd.Text.Trim())
                {

                    label3.Visible = true;
                    label3.Text = "祝贺你登录成功！";
                }
                else
                {
                    label3.Visible = true;
                    label3.Text = "密码错误，请重新输入。";
                }
            }
            name = txtuser.Text.Trim();
            reader.Close();
            conn.Close();
            new Form2().Show();
        }
    }
}

Form2窗体

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;
using System.Data.SqlClient;

namespace 登陆
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }
        SqlConnection conn;
        string sql;
        SqlCommand comm;
        int n;
        private void button1_Click(object sender, EventArgs e)
        {
            conn = new SqlConnection("Data Source=LENOVO-PC\DATA;Initial Catalog=I:\REPAIR.MDF;Integrated Security=True");
            sql = "select count(*) from repair_info where userName='" + Form1.name + "'";
            comm = new SqlCommand(sql, conn);
            conn.Open();
            int i =(int) comm.ExecuteScalar();
            conn.Close();
            //当该用户存在是更新
            if (n > 0)
            {
                sql = "update repair_info set rep_category=@category,rep_address=@address,rep_content=@content,"
                    + "rep_date=@date,rep_number=@number where userName='" + Form1.name + "'";
                comm = new SqlCommand(sql, conn);
                comm.Parameters.Add(new SqlParameter("@category", SqlDbType.VarChar));
                comm.Parameters["@category"].Value = cbbcategory.SelectedItem.ToString();
                comm.Parameters.Add(new SqlParameter("@address", SqlDbType.VarChar));
                comm.Parameters["@address"].Value = txtaddress.Text.Trim();
                comm.Parameters.Add(new SqlParameter("@content", SqlDbType.NChar));
                comm.Parameters["@content"].Value = rtbcontent.Text.Trim();
                DateTime dt = new DateTime();
                comm.Parameters.Add(new SqlParameter("@date", SqlDbType.DateTime));
                comm.Parameters["@date"].Value = dt.Year + "-" + dt.Month + "-" + dt.Day; 
                    //+ " " + dt.Hour + ":" + dt.Minute + ":" + dt.Second;
                comm.Parameters.Add(new SqlParameter("@number", SqlDbType.Int));
                comm.Parameters["@number"].Value = n + 1;
            }
            //当该用户不存在是插入
            else
            {
                sql = "insert into repair_info(userName,rep_category,rep_address,rep_content,rep_date,"
                + "rep_number) values(@username,@category,@address,@content,@date,@number)";
                comm = new SqlCommand(sql, conn);
                comm.Parameters.Add("@username", SqlDbType.Char).Value = Form1.name;
                comm.Parameters.Add("@category", SqlDbType.VarChar).Value = cbbcategory.SelectedItem.ToString();
                comm.Parameters.Add("@address", SqlDbType.VarChar).Value = txtaddress.Text.Trim();
                comm.Parameters.Add("@content", SqlDbType.NChar).Value = rtbcontent.Text.Trim();
                DateTime dt = new DateTime();
                comm.Parameters.Add("@date", SqlDbType.DateTime).Value = dt.Year + "-" + dt.Month + "-" + dt.Day;
                comm.Parameters.Add("@number", SqlDbType.Int).Value = n + 1;
            }
            conn.Open();
            int m=(int)comm.ExecuteNonQuery();
            conn.Close();
            if (m > 0)
            {
                MessageBox.Show("报修成功！");
            }
            else
            {
                MessageBox.Show("请重新报修！");
            }

        }
        //加载时取出当前报修次数
        private void Form2_Load(object sender, EventArgs e)
        {
            conn = new SqlConnection("Data Source=LENOVO-PC\DATA;Initial Catalog=I:\REPAIR.MDF;Integrated Security=True");
            sql = "select rep_number from repair_info where userName='" + Form1.name + "'";
            comm = new SqlCommand(sql, conn);
            conn.Open();
            SqlDataReader reader = comm.ExecuteReader();
            if (!reader.Read())
            {
                n = 0;
            }
            else
            {
                n =(int) reader["rep_number"];
            }
        }
        //退出程序
        private void button2_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
    }
}

测试：

 PSP耗时分析：

PSP	Personal Software Process Stages	Time(min)
Planning	计划	20
·Estimate	·估计这个任务需要多少时间	160
Development	开发	120
·Analysis	·需求分析	20
·Design Spec	·生成设计档案	20
·Design Review	·设计复审	30
·Coding Standard	·代码规范	40
·Design	·具体设计	30
·Coding	·具体编码	120
·Code Review	·代码复审	20
·Test	·测试	20
Reporting	报告	40
·Test Report	·测试报告	10
·Size Measurement	·计算工作量	20
·Postmortem & Process Improvement Plan	·事后总结，并提出过程改进计划	10

团队成员：

成员姓名	学号后四位	贡献分
张雪（队长）（设计/编写代码）	1150	5
穆思羽（复审）	1172	2
毛蕊蕊（复审）	6015	1.5
赵瑞玲（数据库建表）	1156	1.5

团队总结：

张雪：在做这次的作业过程中我又把之前上课学习的有复习了下，感觉编写代码挺有趣的，我会继续努力的。

代码规范。