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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。
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原文地址：http://www.cnblogs.com/snowz/p/5046782.html
