private void search_Click(object sender, EventArgs e)
{
string uid = IDtxt.Text;
if (uid != "")
{
User utemp = new User();
try
{
for (int i = 0; ; i++)
{
utemp = FileDate.ReadOne <User>(i);
if (utemp.ID == uid)
{
v = utemp.Valid;
alteredOne = i;
state.Text = v ? "正常" : "被冻结";
opt.Text = v ? "冻结账号" : "解除冻结";
FreezeShow();
break;
}
}
}
catch (ArgumentOutOfRangeException)
{
state.Text = "未找到账号相关信息";
}
}
}
private void opt_Click(object sender, EventArgs e)
{
if (!Check())
{
return;
}
if (!utemp.Valid)
{
//如果操作者权限大于被操作者，操作有效
if (Main.priorityOver(utemp.Pri))
{
if (utemp.Balance < 0)
{
MessageBox.Show("请帮TA充值后再尝试解冻", "账户余额不足", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
else
{
utemp.Valid = true;
FileDate.AlterInfo(utemp);
FileDate.MatchRecord(OptType.冻结, "123456", utemp.ID);
MessageBox.Show("账户解冻成功.", "通知");
}
}
}
else
{
//如果账号正常那么就无需解冻
MessageBox.Show("无效的操作！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
this.Close();
}
private void confirm_Click(object sender, EventArgs e)
{
if (Check())
{
uint sum = Convert.ToUInt32(NUMtxt.Text);
Book book = new Book(bknametxt.Text, isbntxt.Text, presstxt.Text, authortxt.Text, (BookType)bkTypebox.SelectedIndex);
BookMaster master = new BookMaster(sum, book);
if (FileDate.Exist <BookMaster>(master))
{
DialogResult dr = MessageBox.Show("此书已经存在，要直接添加吗（将会增加总数量）？", "重要提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dr == DialogResult.Yes)
{
master.Total_num += sum;
FileDate.AlterInfo <BookMaster>(master);
}
else
{
return;
}
}
else
{
FileDate.WriteInfo(master);
MessageBox.Show("书籍添加成功！", "通知");
}
}
}
private void opt_Click(object sender, EventArgs e)
{
//---------------------
User utemp = FileDate.ReadOne <User>(alteredOne);
string tip = utemp.Valid ? "被冻结" : "解除冻结";
DialogResult dr = MessageBox.Show(utemp.ID + "即将" + tip, "重要提示", MessageBoxButtons.OKCancel);
if (dr == DialogResult.OK)
{
if (utemp.Pri > Main.user.Pri || (int)utemp.Pri == 3)
{
MessageBox.Show("你没有足够的权限执行此操作", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
if (utemp.Valid)
{
int dur = Convert.ToInt32(Days.Text);
FileDate.WriteInfo <Record>(new Record(OptType.冻结, Main.user.ID, utemp.ID, dur));
}
utemp.Valid = !utemp.Valid;
FileDate.WriteInfo <User>(utemp, alteredOne);
MessageBox.Show("操作成功！");
this.Close();
}
}
}
private void confirmbtn_Click(object sender, EventArgs e)
{
if (found)
{
Book book = master.Info;
if (nameAlter.Checked)
{
book.Name = alteredInfotxt.Text;
}
else if (authAlter.Checked)
{
book.Author = alteredInfotxt.Text;
}
else if (isbnAlter.Checked)
{
book.ISBN = alteredInfotxt.Text;
}
else if (pressAlter.Checked)
{
book.Press = alteredInfotxt.Text;
}
else
{
tipslb.Text = "请选择要修改哪一项";
return;
}
master = new BookMaster(master.Total_num, book);
MessageBox.Show("修改成功", "通知", MessageBoxButtons.OK, MessageBoxIcon.Information);
FileDate.AlterInfo <BookMaster>(master);
}
}
private void searchbtn_Click(object sender, EventArgs e)
{
string isbn = isbntxt.Text;
//重复点击直接跳过
if (master.Info.ISBN == isbn || "" == isbn)
{
if (isbn != "")
{
display();
}
else
{
tipslb.Text = "ISBN不能为空";
}
return;
}
List <BookMaster> list = FileDate.SearchByISBN(isbn);
if (list.Count > 0)
{
master = list[0];
found = true;
display();
}
else
{
showInfotxt.Text = "未找到相关信息，确认ISBN输入是否正确";
}
}
private void button1_Click(object sender, EventArgs e)
{
if (AccountIDtxt.Text == "" || Passwordtxt.Text == "" || nametxt.Text == "")
{
MessageBox.Show("信息填写不能为空，请完善信息！", "温馨提示");
return;
}
if (checkPwdtxt.Text != Passwordtxt.Text)
{
MessageBox.Show("两次密码输入不一致！", "温馨提示");
return;
}
if (stu.Checked || worker.Checked)
{
Privilege pri = Privilege.学生;
if (worker.Checked)
{
pri = Privilege.职工;
}
bool ismale = Convert.ToBoolean(gender.SelectedIndex);
User user = new User(ismale, pri, AccountIDtxt.Text, nametxt.Text, Passwordtxt.Text);
if (FileDate.Exist <User>(user))
{
MessageBox.Show("该用户已经存在！", "通知", MessageBoxButtons.OK, MessageBoxIcon.Hand);
return;
}
FileDate.WriteInfo(user);
tipslb.Text = "用户信息添加成功！";
AccountIDtxt.Text = nametxt.Text = Passwordtxt.Text = checkPwdtxt.Text = "";
}
else
{
MessageBox.Show("请选择用户身份！", "提示");
}
}
private void 帮助ToolStripMenuItem_Click(object sender, EventArgs e)
{
uint size = FileDate.CountOf <Record>();
for (int i = 0; i < size; i++)
{
FileDate.ReadOne <Record>(i).debug();
}
}
private void update()
{
Statelb.Text = Main.user.Valid ? "正常" : "被冻结";
bor_numlb.Text = Main.user.BorrowBook.Count.ToString();
balancelb.Text = Main.user.Balance.ToString();
table.Clear();
foreach (uint bkid in Main.user.BorrowBook)
{
Book book = FileDate.FindObjByID <BookMaster>(bkid.ToString()).Info;
table.Rows.Add(book.Name, book.Author, book.ISBN, book.Press, book.Type, "已借阅");
table.AcceptChanges();
}
}
private void dataGridView1_DoubleClick(object sender, EventArgs e)
{
if (dataGridView1.SelectedRows[0].IsNewRow)
{
return;
}
DialogResult dr = MessageBox.Show("确定要归还这本书吗？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dr == DialogResult.Yes)
{
string isbn = dataGridView1.SelectedRows[0].Cells[2].Value.ToString();
Main.user.givebackTo(FileDate.SearchByISBN(isbn)[0]);
}
}
private void search_Click(object sender, EventArgs e)
{
string uid = IDtxt.Text;
FindUser = FileDate.Exist <User>(new User(uid));
if (FindUser)
{
utemp = FileDate.FindObjByID <User>(uid);
state.Text = utemp.Valid ? "正常" : "被冻结";
}
else
{
state.Text = "未找到账号相关信息";
}
}
private List <BookMaster> SearchByKeyword(Book book)
{
List <BookMaster> bklist = new List <BookMaster>();
BookMaster master = new BookMaster();
uint size = FileDate.CountOf <BookMaster>();
for (int i = 0; i < size; i++)
{
master = FileDate.ReadOne <BookMaster>(i);
if (master.SimiliarTo(book))
{
bklist.Add(master);
}
}
return(bklist);
}
private void Confirmbtn_Click(object sender, EventArgs e)
{
bool done = false;
if (AccountIDtxt.Text == "" || OriPwdtxt.Text == "" || NewPwdtxt.Text == "")
{
Tipslb.Text = "信息不能为空！请首先完善信息";
}
else if (RepeatPwdtxt.Text != NewPwdtxt.Text)
{
Tipslb.Text = "两次输入新密码不一致！请确认密码一致";
}
else
{
User utemp = new User(OriPwdtxt.Text.Trim());
if (FileDate.Exist <User>(utemp))
{
if (utemp.Valid)
{
utemp.Pwd = NewPwdtxt.Text;
FileDate.AlterInfo(utemp);
done = true;
}
else
{
Tipslb.Text = "账号已被冻结！请首先联系管理员解除冻结状态！";
}
}
else
{
Tipslb.Text = "未找到用户信息！请确认是否输入了正确的信息";
}
}
if (done)
{
DialogResult dr = MessageBox.Show("修改密码成功！需要重新登录你的账号,是否愿意？", "提示信息:", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
this.Close();
if (dr == DialogResult.OK)
{
relog.ShowDialog();
}
else
{
Main.user = new User("匿名游客");
}
}
}
private void delbtn_Click(object sender, EventArgs e)
{
if (found)
{
DialogResult dr = MessageBox.Show("确定要删除这类书吗？", "重要提醒", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dr == DialogResult.Yes)
{
FileDate.Delete <BookMaster>(master);
master = new BookMaster();
showInfotxt.Text = "";
}
}
else
{
tipslb.Text = "请先确认书籍信息再进行操作";
}
}
//根据ID找到对象
public static T FindObjByID <T>(string id) where T : IGet, new()
{
try
{
for (int i = 0; ; i++)
{
if (FileDate.ReadOne <T>(i).GetID() == id)
{
return(FileDate.ReadOne <T>(i));
}
}
}
catch (ArgumentOutOfRangeException)
{
MessageBox.Show("未找到用户信息！", "提示");
}
return(new T());
}
//对象是否已经存在
public static bool Exist <T>(T t) where T : IGet, new()
{
try
{
T t2 = new T();
for (int i = 0; ; i++)
{
t2 = FileDate.ReadOne <T>(i);
if (t.GetID().ToLower() == t2.GetID().ToLower() || t.GetName().ToLower() == t2.GetName().ToLower())
{
return(true);
}
}
}
catch (ArgumentOutOfRangeException)
{
}
return(false);
}
private void confirm_Click(object sender, EventArgs e)
{
if (Vis.Checked)
{
Main.user = new User("Visitor");
qual = true;
}
else if (!(Stu.Checked || Worker.Checked || Admin.Checked))
{
MessageBox.Show("请选择你的登录身份！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
User utemp = new User();
uint size = FileDate.CountOf <User>();
for (int i = 0; i < size; i++)
{
utemp = FileDate.ReadOne <User>(i);
if (utemp.ID == IDtxt.Text && utemp.Pwd == PWDtxt.Text)
{
if ((Stu.Checked && utemp.Pri == Privilege.学生) ||
(Worker.Checked && utemp.Pri == Privilege.职工) ||
(Admin.Checked && utemp.Pri == Privilege.管理员))
{
qual = true;
Main.user = new User(utemp);
main.updateStatus();
break;
}
}
}
}
if (qual)
{
this.Close();
}
else
{
MessageBox.Show("未找到用户信息，用户名或密码或者登录身份错误.", "登录失败", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
//通过ISBN来找到书籍（书籍ISBN是唯一的，可以当做一个标识）
public static List <BookMaster> SearchByISBN(string isbn)
{
BookMaster master = new BookMaster();
uint count = FileDate.CountOf <BookMaster>();
List <BookMaster> bklist = new List <BookMaster>(1);
for (int i = 0; i < count; i++)
{
master = FileDate.ReadOne <BookMaster>(i);
if (master.Info.ISBN.Contains(isbn))
{
bklist.Add(master);
break;
}
}
if (bklist.Count == 0)
{
MessageBox.Show("未找到该ISBN编号的书", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
return(bklist);
}
private List <Record> RecordWithinSpan(int span)
{
List <Record> reclist = new List <Record>();
int len = (int)FileDate.CountOf <Record>();
int size = Marshal.SizeOf(typeof(Record));
Record rec = new Record();
for (int i = 1; i <= len; i++)
{
rec = FileDate.ReadOne <Record>(len - i);
if (rec.spanDaysToPresent() <= span)
{
reclist.Add(rec);
}
else
{
break;
}
}
return(reclist);
}
public Main()
{
InitializeComponent();
if (File.Exists("Lib_Mana_Sys.User.dat"))
{
File.Delete("Lib_Mana_Sys.User.dat");
}
if (File.Exists("Lib_Mana_Sys.BookMaster.dat"))
{
File.Delete("Lib_Mana_Sys.BookMaster.dat");
}
if (File.Exists("Lib_Mana_Sys.Record.dat"))
{
File.Delete("Lib_Mana_Sys.Record.dat");
}
User u1 = new User(true, Privilege.学生, "16020031111", "OUCer", "123456");
User u2 = new User(false, Privilege.职工, "16020031231", "玉良红", "987452");
User u3 = new User(true, Privilege.学生, "16020031561", "梁园", "654123");
User u4 = new User(true, Privilege.管理员, "123456", "Master", "123456");
Book b1 = new Book("Java从入门到放弃", "123456", "人民教育出版社", "Master", BookType.数理科学与化学);
BookMaster master = new BookMaster(10, b1);
FileDate.WriteInfo(master);
Book b2 = new Book("C Plus从入门到入土", "1156416454652", "仁爱教育出版社", "Oh Yes", BookType.哲学宗教);
for (uint i = 100; i < 200; i++)
{
string ment = i.ToString();
Book b = new Book("英雄联盟" + ment, ment, "大魔王出版社", "Faker" + ment, BookType.综合性图书);
BookMaster m = new BookMaster(2, b);
FileDate.WriteInfo(m);
}
master = new BookMaster(6, b2);
FileDate.WriteInfo(master);
FileDate.WriteInfo(u2);
FileDate.WriteInfo(u3);
FileDate.WriteInfo(u4);
FileDate.WriteInfo(u1);
login = new Login(this);
}
private void opt_Click(object sender, EventArgs e)
{
if (!Check())
{
return;
}
bool firm = false;
if (utemp.Valid)
{
//冻结自身账号
if (Main.user.ID == utemp.ID)
{
DialogResult dr = MessageBox.Show("确定要冻结自身账号？", "重要提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
firm = dr == DialogResult.Yes;
}
else
{
//如果操作者权限高于被操作者，操作有效
//if (Main.priorityOver(utemp.Pri)) firm = true;
//如果是管理员，操作有效
firm = Main.user.Pri == Privilege.管理员;
}
if (firm)
{
int dur = Convert.ToInt32(Days.Text);
utemp.Valid = false;
FileDate.AlterInfo <User>(utemp);
FileDate.WriteInfo <Record>(new Record(OptType.冻结, "123456", utemp.ID, dur));
MessageBox.Show("冻结账户成功.", "通知");
}
}
else
{
//账号已经被冻结
MessageBox.Show("无效的操作！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
this.Close();
}
//与以前的记录匹配，成为历史记录
public static void MatchRecord(OptType tp, string opt, string obj)
{
if (!File.Exists("Lib_Mana_Sys.User.dat"))
{
return;
}
int len = 0;
using (FileStream fs = new FileStream("Lib_Mana_Sys.Record.dat", FileMode.Open))
{
len = (int)fs.Length / Marshal.SizeOf(typeof(Record));
}
Record rec = new Record();
for (int i = 1; i <= len; i++)
{
rec = FileDate.ReadOne <Record>(len - i);
if (rec.Unmatch && rec.Type == tp && rec.Optor == opt && rec.Objer == obj)
{
FileDate.AlterInfo(rec.findMatch());
break;
}
}
}
//删除对象（相当于将对象变为默认值）
public static void Delete <T>(T t) where T : IGet, new()
{
int structsize = Marshal.SizeOf(typeof(T));
uint count = FileDate.CountOf <T>();
using (FileStream fs = new FileStream(t.ToString() + ".dat", FileMode.Open))
{
using (BinaryReader br = new BinaryReader(fs))
{
for (uint i = 0; i < count; i++)
{
if (Byte2Struct <T>(br.ReadBytes(structsize)).GetID() == t.GetID())
{
using (BinaryWriter bw = new BinaryWriter(fs))
{
fs.Position -= structsize;
bw.Write(Struct2Byte <T>(new T()));
}
return;
}
}
}
}
}
//更新当前用户数据
public static void update()
{
FileDate.AlterInfo(Main.user);
}
