第七次作业+梦飞扬

在第六次的基础上：

增加：

1、用代码实现对数据库的增删改查操作，以此来实现用户的注册。

2、新建一个报修表，名字为repair_info，列有用户名、报修类型、报修地点、报修内容，报修日期和时间、用户报修次数等，列名自己起。

3、在报修界面中，当用户点击“报修”按钮时，软件会把用户报修的信息写入数据库中，更新报修次数，同时会清空相应的文本框，软件还要

检查所有文本框是否为空，空的话提示报修失败。

代码实现：

from1:

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 登录
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        string ConnStr = "Data Source=.;Initial Catalog=repair;Integrated Security=True";
        SqlConnection conn = new SqlConnection();
        public static string name;
        private void button1_Click(object sender, EventArgs e)
        {
           
            if (textBox1.Text != "" && textBox2.Text != "")
            {
                kailu();

                name = textBox1.Text;
                string com = "select count(*) from user_info where userName='" + name + "' ";
                SqlCommand comm = new SqlCommand(com, conn);
                int a = (int)comm.ExecuteScalar();
                if (a == 0)
                {
                    label3.Text = "用户名不存在！";
                    textBox1.Clear();
                    textBox2.Clear();

                }
                else
                {

                    string corrStr = "select count(*)  from user_info where userName='" + textBox1.Text + "' and  passWord='" + textBox2.Text + "'";
                    SqlCommand con = new SqlCommand(corrStr, conn);
                    int tt = (int)con.ExecuteScalar();
                    if (tt == 0)
                    {
                        label3.Text = "您输入的密码有错误，请重新输入！";                       
                        textBox2.Clear();
                    }
                    else
                    {

                        label3.Text="恭喜你，登录成功了！";
                        Form2 foa = new Form2();
                        foa.ShowDialog();
                    }
                }



            }
            else
            {
                MessageBox.Show("请输入用户名和密码！");
            }
            
            
        }
        private void kailu()
        {
           

            try
            {
                conn = new SqlConnection(ConnStr);
                conn.Open();
            }
            catch (Exception ex)
            {

               label3.Text="数据库连接失败" + ex.ToString();
            }
 
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Form3 form = new Form3();
            form.ShowDialog();
        }
        }
    }

from2:

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 登录
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }
        string ConnStr = "Data Source=.;Initial Catalog=repair;Integrated Security=True";
        SqlConnection conn = new SqlConnection();
        private void Form2_Load(object sender, EventArgs e)
        {
            label1.Text = "欢迎你" + Form1.name;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            conn = new SqlConnection(ConnStr);
            string updarta = "Update user_info set passWord='" + textBox3.Text.Trim() + "' where userName='" + textBox1.Text.Trim() + "'";
            SqlCommand comm = new SqlCommand(updarta, conn);
            conn.Open();
            int a = comm.ExecuteNonQuery();
            if (a > 0)
            {
                MessageBox.Show("修改成功！");
            }
            else
            {
                MessageBox.Show("修改失败！");
            }
            conn.Close();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            conn = new SqlConnection(ConnStr);
            string comstr = "insert into repair_info(usernaem,class1,addss,nierong,nowdate,cishu) values('"+textBox2.Text+"','"+textBox4.Text+"','"+textBox5.Text+"','"+textBox6.Text+"','"+textBox7.Text+"','"+textBox8.Text+"')";
            SqlCommand comm = new SqlCommand(comstr, conn);
            conn.Open();
            if (textBox2.Text != "")
            {
                int a = comm.ExecuteNonQuery();
                if (a > 0)
                {
                    MessageBox.Show("报修成功！");
                }
                else
                {
                    MessageBox.Show("报修失败！");
                }
            }
            string commstr = "select usernaem,class1,addss,nierong,nowdate,cishu from repair_info";
            SqlDataAdapter das = new SqlDataAdapter(commstr, conn);
            DataSet ds = new DataSet();
            DataTable td = new DataTable();
            das.Fill(ds);
            dataGridView1.DataSource = ds.Tables[0];
            conn.Close();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            conn = new SqlConnection(ConnStr);
            string updarta = "Update repair_info set cishu='" + textBox8.Text.Trim() + "' where usernaem='" + textBox2.Text.Trim() + "'";
            SqlCommand comm = new SqlCommand(updarta, conn);
            conn.Open();
            int a = comm.ExecuteNonQuery();
            if (a > 0)
            {
                MessageBox.Show("再次报修成功！");
            }
            else
            {
                MessageBox.Show("再次报修失败！");
            }
            conn.Close();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            conn = new SqlConnection(ConnStr);
            string updarta = "delete form repair_info where usernaem='" + textBox2.Text.Trim() + "'";
            SqlCommand comm = new SqlCommand(updarta, conn);
            conn.Open();
            int a = comm.ExecuteNonQuery();
            if (a > 0)
            {
                MessageBox.Show("完成保修成功！");
            }
            else
            {
                MessageBox.Show("完成报修失败！");
            }
            conn.Close();
        }


    }
}

from3:

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 登录
{
    public partial class Form3 : Form
    {
        public Form3()
        {
            InitializeComponent();
        }
        string ConnStr = "Data Source=.;Initial Catalog=repair;Integrated Security=True";
        SqlConnection conn = new SqlConnection();

        private void button1_Click(object sender, EventArgs e)
        {

            if (textBox1.Text != "" && textBox2.Text != "")
            {
                conn = new SqlConnection(ConnStr);
                string comstr = @"insert into user_info(userName,passWord) values('" + textBox1.Text + "','" + textBox2.Text + "')";
                SqlCommand comm = new SqlCommand(comstr, conn);
                conn.Open();
                    int a = comm.ExecuteNonQuery();
                    if (a > 0)
                    {
                        MessageBox.Show("注册成功！");
                    }
                    else
                    {
                        MessageBox.Show("注册失败！");
                    }                          
 
            }
            else
            {
                if (textBox1.Text != "")
                {
                    MessageBox.Show("密码不能为空！");
                }
                else
                {
                    MessageBox.Show("用户名不能为空！");
                }
            }
            conn.Close();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            conn = new SqlConnection(ConnStr);
            string delstr = "delete from user_info where userName='"+textBox1.Text.Trim()+"'";
            SqlCommand comm = new SqlCommand(delstr,conn);
            conn.Open();
            int a = comm.ExecuteNonQuery();
            if (a > 0)
            {
                MessageBox.Show("注销成功！");
            }
            else
            {
                MessageBox.Show("注销失败哦！");
            }
            conn.Close();
        }

    }
}

 数据库：

：

代码实现：

 PSP消耗：

psp	Personal Software Process Stages	Time（h）
planning	.计划	5
.Estimate	.估计这个任务需要多长时间	4
Development	.开发	40
.Analysis	.需求分析	3
.Design Spec	.生成设计文档	2
.Design Review	.设计复审	4
• Coding Standard	.代码规范	2
• Design	.具体设计	15
• Coding	.具体编码	4
• Code Review	.代码复审	3
• Text	.测试	3
Reporting	.报告	4
• Test Report	.测试报告	3
• Size Measurement	.计算工作量	0.5
• Postmortem&Process Improvement Plan	.事后总结并提出改进计划	4

团队总结：

本次团队在上一次的作业中，做了增量，通过团队合作，需要的是交流，只有交流多了，才能进步的多，多动手，在出错中改进，多做，才知道问题所在，在团队里，学会学习，我记得老师说，大学要学会学习的能力，学会查资料；我们团队需要多学习！希望跟上大家的步伐！

工作分配

    队长：赵文涛

    杨栗：查资料      1分；

    娄豪：PSP消耗统计 1分；

    李宁：总结        1分；

    姚震：测试        1分；

    肖雪峰：代码复审  1分；

    赵文涛：代码、复查、数据库、思路、界面设计  5分；