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1、1.登陆界面主要代码：public partial class LoginForm:Formpublic static string uacc;public static string upsw;public static string uname;public static string usex;public static string upart;public static string uright;public LoginForm()InitializeComponent();private void loginbtn_Click(object sender,EventArgs e)
2、if(this.useracctxt.Text.Trim()=&this.pswtxt.Text=)MessageBox.Show(请输入您的用户名和密码！,提示！);return;trystring sql;sql=select*from tb_user where uacc=+this.useracctxt.Text+and upsw=+this.pswtxt.Text+;OleDbDataReader dr=DBHelp.OleReader(sql);dr.Read();if(dr.HasRows)uacc=this.useracctxt.Text;upsw=this.pswtxt.Te
3、xt;uname=druname.ToString();usex=drusex.ToString();upart=drupart.ToString();uright=druright.ToString();MainForm af=new MainForm(this);this.Hide();this.useracctxt.Clear();this.pswtxt.Clear();af.Show();elseMessageBox.Show(账号或密码错误！,提示！);this.useracctxt.Clear();this.pswtxt.Clear();this.useracctxt.Focus(
4、);catch(Exception)MessageBox.Show(数据库无法连接！,警告！);private void cancelbtn_Click(object sender,EventArgs e)Application.Exit();private void LoginForm_Closing(object sender,FormClosingEventArgs e)Application.Exit();2.主界面（图较小，自己可以拉大点）主要代码就不写了，很简单。3.权限设置主要代码：public partial class RightSet:Formpublic RightSet
5、()InitializeComponent();private void RightSet_Load(object sender,EventArgs e)this.rightbox.SelectedIndex=0;/this.treeright.ExpandAll();Fill();private void okbtn_Click(object sender,EventArgs e)if(this.txtnum.Text=string.Empty)MessageBox.Show(请输入最大借阅图书数量！,提示！);return;if(this.txtday.Text=string.Empty)
6、MessageBox.Show(请输入最大借阅图书时间！,提示！);return;if(this.txtcost.Text=string.Empty)MessageBox.Show(请输入借书押金金额！,提示！);return;if(this.txtfine.Text=string.Empty)MessageBox.Show(请输入超期罚款金额！,提示！);return;if(this.txttim.Text=string.Empty)MessageBox.Show(请输入图书遗失罚款倍数！,提示！);return;ArrayList arr=new ArrayList();foreach(T
7、reeNode nodes in this.treeright.Nodes)if(nodes.Checked)arr.Add(1);elsearr.Add(0);foreach(TreeNode node in nodes.Nodes)if(node.Checked)arr.Add(1);elsearr.Add(0);string a=new string11;for(int i=0;i arr.Count;i+)if(arri.ToString().Trim()=1)ai=yes;elseai=no;string sql=string.Empty;sql+=select*from tb_ri
8、ght where uright=+this.rightbox.Text+;DataTable dt=DBHelp.ExeOleCommand(sql);bool b=false;while(dt.Rows.Count!=0)b=true;break;string sql1;if(b)sql1=update tb_right set;sql1+=maxbook=+this.txtnum.Text+,;sql1+=maxdate=+this.txtday.Text+,;sql1+=rcost=+this.txtcost.Text+,;sql1+=rfine=+this.txtfine.Text+
9、,;sql1+=rtim=+this.txttim.Text+,;sql1+=rbm=+a0+,;sql1+=rum=+a1+,;sql1+=rrm=+a2+,;sql1+=rborm=+a3+,;sql1+=ris=+a4+,;sql1+=rbis=+a5+,;sql1+=ruis=+a6+,;sql1+=rboris=+a7+,;sql1+=rblp=+a8+,;sql1+=rbl=+a9+,;sql1+=rlp=+a10+;sql1+=where uright=+this.rightbox.Text+;elsesql1=insert intotb_right(uright,maxbook
10、,maxdate,rcost,rfine,rtim,rbm,rum,rrm,rborm,ris,rbis,ruis,rboris,rblp,rbl,rlp);sql1+=values(+this.rightbox.Text+,+this.txtnum.Text+,+this.txtday.Text+,+this.txtcost.Text+,+this.txtfine.Text+,+this.txttim.Text+,+a0+,+a1+,+a2+,+a3+,+a4+,+a5+,+a6+,+a7+,+a8+,+a9+,+a10+);DataTable dt1=DBHelp.ExeOleComman
11、d(sql1);Fill();private void Fill()string sql;sql=select rid as ID号,uright as 用户身份,maxbook as 最大借书数量,maxdate as 最大借阅时间,rcost as 押金,rfine as 超期罚率,rtim as 遗失赔率,rbm as 图书管理,rum as 用户管理,rrm as 权限管理,rborm as 借阅管理,ris as 信息查询,rbis as 图书信息查询,ruis as 用户信息查询,rboris as 借阅历史查询,rblp as 图书挂失处理,rbl as 图书挂失,rlp as
12、挂失处理 from tb_right;DataTable dt=DBHelp.ExeOleCommand(sql);this.dataGridView1.DataSource=dt;private void cell_click(object sender,DataGridViewCellEventArgs e)this.rightbox.Text=this.dataGridView11,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txtnum.Text=this.dataGridView12,thi
13、s.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txtday.Text=this.dataGridView13,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txtcost.Text=this.dataGridView14,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txtfine.Text=this.dataGridView1
14、5,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txttim.Text=this.dataGridView16,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();ArrayList list=new ArrayList();string sql=select*from tb_right where uright=+this.rightbox.Text+;DataTable dt=DBHelp.ExeOleCommand(sq
15、l);if(dt.Rows.Count!=0)for(int i=0;i 11;i+)list.Add(dt.Rows07+i.ToString();ArrayList arr=new ArrayList();foreach(TreeNode nodes in this.treeright.Nodes)arr.Add(nodes);foreach(TreeNode node in nodes.Nodes)arr.Add(node);for(int i=0;i list.Count;i+)if(listi.ToString()=yes)(TreeNode)arri).Checked=true;e
16、lse(TreeNode)arri).Checked=false;4.权限修改主要代码：public partial class UserRight:Formpublic UserRight()InitializeComponent();private void btncancel_Click(object sender,EventArgs e)this.Close();private void UserRight_Load(object sender,EventArgs e)this.checkbox.SelectedIndex=0;this.partbox.SelectedIndex=0;
17、private void Fill()if(this.checkbox.Text=)MessageBox.Show(请选择要使用的查询字段！,提示！);return;if(this.partbox.Text=)MessageBox.Show(请选择用户所在的部门！,提示！);return;string sql=string.Empty;sql+=select uid as ID号,uacc as 帐号,uname as 姓名,usex as 性别,upart as 部门,utelphone as 移动电话,uphone as 固定电话,udate as 注册日期,uright as 权限 fr
18、om tb_user;if(this.checktxt.Text!=)string c=this.checkbox.SelectedIndex.ToString();switch(c)case 0:/用户帐号if(this.checktxt.Text!=string.Empty)sql+=where uacc like%+this.checktxt.Text+%;break;case 1:/用户姓名if(this.checktxt.Text!=string.Empty)sql+=where uname like%+this.checktxt.Text+%;break;default:break
19、;if(this.partbox.SelectedIndex.ToString()!=0)sql+=and upart=+this.partbox.Text+;elseif(this.partbox.SelectedIndex.ToString()!=0)sql+=where upart=+this.partbox.Text+;sql+=order by uacc asc;DataTable dt=DBHelp.ExeOleCommand(sql);this.dataGridView1.DataSource=dt;private void checkbtn_Click(object sende
20、r,EventArgs e)Fill();private void cell_click(object sender,DataGridViewCellEventArgs e)this.txtuacc.Text=this.dataGridView11,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txtname.Text=this.dataGridView12,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txts
21、ex.Text=this.dataGridView13,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txtpart.Text=this.dataGridView14,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txttel.Text=this.dataGridView15,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.
22、txtphone.Text=this.dataGridView16,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txtdate.Text=this.dataGridView17,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.txtright.Text=this.dataGridView18,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim
23、();this.txtright.Enabled=true;private void btnchange_Click(object sender,EventArgs e)if(this.txtuacc.Text=)MessageBox.Show(执行操作前，请先在下表选择要修改的用户！,提示！);return;DialogResult res;res=MessageBox.Show(您确定要修改该用户吗？,提示！,MessageBoxButtons.YesNo);if(res=DialogResult.Yes)string sql=string.Empty;sql+=update tb_use
24、r set uright=+this.txtright.Text+;sql+=where uacc=+this.txtuacc.Text+;DataTable dt=DBHelp.ExeOleCommand(sql);MessageBox.Show(修改成功！,恭喜！);Fill();5.添加图书信息主要代码：public partial class NewBook:Formpublic NewBook()InitializeComponent();private void retbtn_Click(object sender,EventArgs e)this.Hide();private v
25、oid savebtn_Click(object sender,EventArgs e)if(this.booknotxt.Text=)MessageBox.Show(请输入图书的信息！,提示！);return;if(this.booknametxt.Text=)MessageBox.Show(请输入图书的信息！,提示！);return;if(this.classtxt.Text=)MessageBox.Show(请输入图书的信息！,提示！);return;if(this.isbntxt.Text=)MessageBox.Show(请输入图书的信息！,提示！);return;if(this.b
26、ookcosttxt.Text=)MessageBox.Show(请输入图书的信息！,提示！);return;if(this.bookwritertxt.Text=)MessageBox.Show(请输入图书的信息！,提示！);return;if(this.bookpubtxt.Text=)MessageBox.Show(请输入图书的信息！,提示！);return;if(this.numtxt.Text=)MessageBox.Show(请输入图书的信息！,提示！);return;if(this.notetxt.Text=)MessageBox.Show(请输入图书的信息！,提示！);retu
27、rn;/string pat3=u4e00-u9fa5+$;/全为汉字/string pat4=(u4e00-u9fa5+|A-Za-z+)$;/汉字或字母/string pat5=u4e00-u9fa52,4$;/两到四位汉字string pat1=(d-*)9dxX$;/图书的ISBN号格式X-XXXX-XXXX-X或X-XXX-XXXXX-X（X为数字，以图书实际ISBN号为准）string pat2=+?1-90-9*$;/正整数string pat3=(0|1-90-9*)(.0-92)?$;/双精度浮点数bool m1=Program.match(this.isbntxt.Text
28、,pat1);bool m2=Program.match(this.numtxt.Text,pat2);bool m3=Program.match(this.bookcosttxt.Text,pat3);if(!m1)MessageBox.Show(图书的ISBN号格式为X-XXXX-XXXX-X或X-XXX-XXXXX-X（X为数字，以图书实际ISBN号为准）！,提示！);this.isbntxt.Text=;return;if(!m2)MessageBox.Show(图书购买数量应为大于0的整数！,提示！);this.numtxt.Text=;return;if(!m3)MessageBo
29、x.Show(图书价格应为XX.XX元！,提示！);this.bookcosttxt.Text=;return;int num;num=Convert.ToInt32(this.numtxt.Text);for(int i=1,k=Convert.ToInt32(this.booknotxt.Text);i=num;i+,k+)string sql;sql=insert intotb_book(bno,bname,bclass,bisbn,bcost,adder,adddate,bauthor,bpub,bstate,bnote)+values(+k.ToString()+,+this.boo
30、knametxt.Text+,+this.classtxt.Text+,+this.isbntxt.Text+,+this.bookcosttxt.Text+,+LoginForm.uname+,+DateTime.Now.ToString()+,+this.bookwritertxt.Text+,+this.bookpubtxt.Text+,在库,+this.notetxt.Text+);DataTable dt=DBHelp.ExeOleCommand(sql);MessageBox.Show(注册成功！,恭喜！);this.Hide();private void rebtn_Click(
31、object sender,EventArgs e)this.isbntxt.Clear();Clears();private void Clears()this.booknametxt.Clear();/this.isbntxt.Clear();this.bookcosttxt.Clear();this.bookwritertxt.Clear();this.bookpubtxt.Clear();this.notetxt.Clear();this.numtxt.Clear();private void NewBook_Load(object sender,EventArgs e)/*strin
32、g sql;sql=select bno from tb_book order by bno asc;DataTable dt=DBHelp.ExeOleCommand(sql);for(int i=0,k=10000001;i 1;i+,k+)for(int j=0;j dt.Rows.Count;j+)if(dt.Rowsj0.ToString().Trim().Equals(k.ToString()k+;this.booknotxt.Items.Add(k.ToString();this.booknotxt.SelectedIndex=0;this.classtxt.SelectedIn
33、dex=0;*/string sql;sql=select top 1 bno from tb_book order by bno desc;DataTable dt=DBHelp.ExeOleCommand(sql);int k;for(int i=0;i 1;i+)if(dt.Rows00.ToString()=)k=10000001;elsek=Convert.ToInt32(dt.Rows00.ToString();k+;this.booknotxt.Items.Add(k.ToString();this.booknotxt.SelectedIndex=0;this.classtxt.
34、SelectedIndex=0;private void findbtn_Click(object sender,EventArgs e)if(this.isbntxt.Text=)MessageBox.Show(请输入图书的ISBN号！,提示！);return;string sql;sql=select*from tb_book where bisbn=+this.isbntxt.Text+;OleDbDataReader dr=DBHelp.OleReader(sql);dr.Read();if(dr.HasRows)this.booknametxt.Text=drbname.ToStri
35、ng().Trim();this.classtxt.Text=drbclass.ToString().Trim();this.bookcosttxt.Text=drbcost.ToString().Trim();this.bookwritertxt.Text=drbauthor.ToString().Trim();this.bookpubtxt.Text=drbpub.ToString().Trim();this.notetxt.Text=drbnote.ToString().Trim();MessageBox.Show(找到匹配图书信息，自动填充基本信息，请填充余下信息！,提示！);this
36、.numtxt.Enabled=true;elseClears();MessageBox.Show(未找到匹配图书信息！,提示！);this.booknotxt.Enabled=true;this.booknametxt.Enabled=true;this.classtxt.Enabled=true;this.bookcosttxt.Enabled=true;this.bookwritertxt.Enabled=true;this.bookpubtxt.Enabled=true;this.numtxt.Enabled=true;this.notetxt.Enabled=true;6.图书信息管
37、理主要代码：public partial class BookManage:Formpublic BookManage()InitializeComponent();string bookisbn;private void BookManage_Load(object sender,EventArgs e)this.checkbox.SelectedIndex=0;this.classbox.SelectedIndex=0;private void checkbtn_Click(object sender,EventArgs e)FillGrid();private void cell_cli
38、ck(object sender,DataGridViewCellEventArgs e)FillInfo();private void nobtn_Click(object sender,EventArgs e)this.Close();private void okbtn_Click(object sender,EventArgs e)if(this.nametxt.Text=string.Empty)MessageBox.Show(执行操作前，请先选择图书！,提示！);return;/修改同ISBN图书信息string sql2=string.Empty;sql2+=update tb_
39、book set bisbn=+this.isbntxt.Text+,bname=+this.nametxt.Text+,bclass=+this.classtxt.Text+,bcost=+this.costtxt.Text+,bauthor=+this.writertxt.Text+,bpub=+this.pubtxt.Text+,adder=+this.addertxt.Text+,bnote=+this.notetxt.Text+;sql2+=where bisbn=+this.bookisbn+;DataTable dt2=DBHelp.ExeOleCommand(sql2);str
40、ing sql5=string.Empty;sql5+=update tb_borrow set bname=+this.nametxt.Text+,bisbn=+this.isbntxt.Text+;sql5+=where bisbn=+this.bookisbn+;DataTable dt5=DBHelp.ExeOleCommand(sql5);MessageBox.Show(该类图书信息修改成功！,提示！);this.checktxt.Text=;FillGrid();FillInfo();private void FillGrid()if(this.checkbox.Text=stri
41、ng.Empty)MessageBox.Show(请输入你要使用的检索条件！,提示！);return;if(this.classbox.Text=string.Empty)MessageBox.Show(请输入你要查找的图书类型！,提示！);return;string sql=string.Empty;sql+=select bid as ID号,bno as 图书编号,bname as 图书名称,bauthor as 作者,bclass as 类别,bisbn as ISBN号,bcost as 价格,bpub as 出版社,adder as 记录员,adddate as 入库日期,bnot
42、e as 内容简介,bstate as 状态 from tb_book;if(this.checktxt.Text!=)string c=this.checkbox.SelectedIndex.ToString();switch(c)case 0:/图书名称if(this.checktxt.Text!=string.Empty)sql+=where bname like%+this.checktxt.Text+%;break;case 1:/图书编号if(this.checktxt.Text!=string.Empty)sql+=where bno like%+this.checktxt.Te
43、xt+%;break;case 2:/作者if(this.checktxt.Text!=string.Empty)sql+=where bauthor like%+this.checktxt.Text+%;break;case 3:/isbn号if(this.checktxt.Text!=string.Empty)sql+=where bisbn like%+this.checktxt.Text+%;break;case 4:/出版社if(this.checktxt.Text!=string.Empty)sql+=where bpub like%+this.checktxt.Text+%;br
44、eak;default:break;if(this.classbox.SelectedIndex.ToString()!=0)sql+=and bclass=+this.classbox.Text+;elseif(this.classbox.SelectedIndex.ToString()!=0)sql+=where bclass=+this.classbox.Text+;sql+=order by bno asc;DataTable dt=DBHelp.ExeOleCommand(sql);this.dataGridView1.DataSource=dt;private void FillI
45、nfo()this.label3.Text=this.dataGridView11,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.isbntxt.Text=this.dataGridView15,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.nametxt.Text=this.dataGridView12,this.dataGridView1.CurrentCell.RowIndex.Value.ToString
46、().Trim();this.classtxt.Text=this.dataGridView14,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.costtxt.Text=this.dataGridView16,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.writertxt.Text=this.dataGridView13,this.dataGridView1.CurrentCell.RowIndex.Value
47、.ToString().Trim();this.pubtxt.Text=this.dataGridView17,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.addertxt.Text=this.dataGridView18,this.dataGridView1.CurrentCell.RowIndex.Value.ToString().Trim();this.notetxt.Text=this.dataGridView110,this.dataGridView1.CurrentCell.RowInde
48、x.Value.ToString().Trim();this.isbntxt.Enabled=true;this.nametxt.Enabled=true;this.classtxt.Enabled=true;this.costtxt.Enabled=true;this.writertxt.Enabled=true;this.pubtxt.Enabled=true;this.notetxt.Enabled=true;this.bookisbn=this.isbntxt.Text;7.用户信息添加主要代码：public partial class RegisterForm:Formpublic
49、RegisterForm()InitializeComponent();private void regbtn_Click(object sender,EventArgs e)if(this.usernametxt.Text=string.Empty)MessageBox.Show(请输入用户姓名！,提示！);return;if(this.sextxt.Text=string.Empty)MessageBox.Show(请输入用户性别！,提示！);return;if(this.partcob.Text=string.Empty)MessageBox.Show(请输入用户所在部门！,提示！);r
50、eturn;if(this.telphonetxt.Text=string.Empty)MessageBox.Show(请输入用户移动电话！,提示！);return;if(this.phonetxt.Text=string.Empty)MessageBox.Show(请输入用户固定电话！,提示！);return;string pat1=0-98,11$;bool m1=Program.match(this.telphonetxt.Text,pat1);bool m2=Program.match(this.phonetxt.Text,pat1);if(!m1)MessageBox.Show(电话