1. DT221/3 Internet Application Development Active Server Pages & Database Connection

2. Example of ASP Database Connection A simple application example 1)Use ASP for HTML form 2)Login Check 3)Database Connection 4)Database Insertion, Update and Deletion

3. Example of ASP Database Connection User ManagementAction Process Insertion Form Update Form Deletion Conform Login Form Insertion Update Deletion

4. Example of ASP Database Connection-login.asp Login page User Name: Password:

5. Example of ASP Database Connection-check.asp(1) <% Dim user, password user = Request.Form("user").Item password = Request.Form("password").Item dim Conn, Rs, mySQL set Conn = Server.CreateObject("ADODB.Connection") ' conn objects set Rs = Server.CreateObject("ADODB.RecordSet")' Record Set Conn.Open ("Provider=sqloledb;Server=CIAN;Database=cliu;Uid=testuser;Password=;") Rs.ActiveConnection = Conn mySQL = "Select SecurityLevel From cliu.users Where UserName= '" & user & "' and Password = '" & password & "'" Rs.Open(mySQL)

6. Example of ASP Database Connection-check.asp(2) if not Rs.eof then if Rs("securityLevel")=12 then Session("level")=12 Conn.Close Set Conn = NOTHING Response.Redirect ("menu.asp") end if if Rs("securityLevel")=8 then Session("level")=8 Conn.Close Set Conn = NOTHING Response.Redirect("showuser.asp") end if if Rs("securityLevel")=1 then Session("level")=1 Conn.Close Set Conn = NOTHING Response.Redirect("welcome.asp") end if

7. Example of ASP Database Connection-check.asp(3) else Session("level")=-1 Conn.Close Set Conn = NOTHING Response.Redirect("login.asp") end if %>

8. Example of ASP Database Connection-check.asp(3) else Session("level")=-1 Conn.Close Set Conn = NOTHING Response.Redirect("login.asp") end if %>

9. Example of ASP Database Connection-adduser.asp …… Please enter the new user name: Please enter the new password: Please enter the first name: Please enter the second name: Please enter the security level:

10. Example of ASP Database Connection-addusertodb.asp <%Dim user, password, first, second, level user = Trim(Request.Form("user").Item) password = Trim(Request.Form("password").Item) first = Trim(Request.Form("first").Item) second = Trim(Request.Form("second").Item) level = Request.Form("level").Item dim Conn, Rs, mySQL set Conn = Server.CreateObject("ADODB.Connection") ' conn objects set Rs = Server.CreateObject("ADODB.RecordSet")' Record Set Conn.Open ("Provider=sqloledb;Server=CIAN;Database=cliu;Uid=testuser;Password=;") mySQL = "Insert into cliu.users values ( '" & user& "', '" & password & "', '" & first & "', '" & second &"', " & level & ")“ Conn.Execute(mySQL) Conn.Close Set Conn = NOTHING Response.Redirect("showuser.asp") %>

11. Example of ASP Database Connection-edit.asp …… ") dim Conn, Rs, user_id, i set Conn = Server.CreateObject("ADODB.Connection") ' conn objects set Rs = Server.CreateObject("ADODB.RecordSet")' Record Set Conn.Open ("Provider=sqloledb;Server=CIAN;Database=cliu;Uid=testuser;Password=;") Rs.ActiveConnection = Conn Rs.Open("Select * From cliu.users") While not Rs.eof Response.Write("user name = " &Rs("UserName").Value & " ") Response.Write(" edit ") Response.Write(" ") Rs.MoveNext Wend %>

12. Example of ASP Database Connection-edituser.asp(1) <%Dim userid userid = Int(Request.QueryString("id").Item) dim Conn, Rs, mySQL set Conn = Server.CreateObject("ADODB.Connection") ' conn objects set Rs = Server.CreateObject("ADODB.RecordSet")' Record Set Conn.Open ("Provider=sqloledb;Server=CIAN;Database=cliu;Uid=testuser;Password=;") Rs = Conn.Execute("cliu.selectuser " &userid) %> Select user to edit

13. Example of ASP Database Connection-edituser(2).asp //Client side javascript function check(){ test=true if (document.form1.user.value==""){ alert("Please enter the user name"); document.form1.user.focus(); test=false;} if (document.form1.password.value==""){ alert("Please enter the password"); document.form1.password.focus(); test=false;} if (document.form1.first.value==""){ alert("Please enter the user' first name"); document.form1.first.focus(); test=false;} if (document.form1.second.value==""){ alert("Please enter the user's second name"); document.form1.second.focus(); test=false;}

14. Example of ASP Database Connection-edituser(3).asp if (document.form1.level.value==""||(document.form1.level.value!=12&&docu ment.form1.level.value!=8&&document.form1.level.value!=1)){ alert("Please enter the correct level"); document.form1.user.focus(); test=false; } return test } >

15. Example of ASP Database Connection-edituser.asp(4) Please enter the new user name: " size="20"> Please enter the new password: " size="20"> Please enter the first name: " size="20"> Please enter the second name: " size="20"> Please enter the security level: " size="20">

16. Example of ASP Database Connection-editusertodb.asp <%Dim user, password, first, second, level userid = Int(Request.Form("userid").Item) user = Trim(Request.Form("user").Item) password = Trim(Request.Form("password").Item) first = Trim(Request.Form("first").Item) second = Trim(Request.Form("second").Item) level = Int(Request.Form("level").Item) dim Conn, Rs, mySQL set Conn = Server.CreateObject("ADODB.Connection") ' conn objects set Rs = Server.CreateObject("ADODB.RecordSet")' Record Set Conn.Open ("Provider=sqloledb;Server=CIAN;Database=cliu;Uid=testuser;Password=;") Conn.Execute("cliu.edituser "& userid &",'" & user& "', '" & password & "', '" & first & "', '" & second &"', " & level) Conn.Close Set Conn = NOTHING Response.Redirect("menu.asp") %>

17. Example of ASP Database Connection-deluser.asp(1) Database Connection function ConfirmDelete(s_User, s_ID) { var s_Dialog = "Are you sure you want to delete user '" + s_User + "'?"; if(confirm(s_Dialog)) { document.location.href = "deluserdb.asp?id=" + s_ID; } }// end function

18. Example of ASP Database Connection-deluser(2).asp ") dim Conn, Rs, user_id, i set Conn = Server.CreateObject("ADODB.Connection") ' conn objects set Rs = Server.CreateObject("ADODB.RecordSet")' Record Set Conn.Open ("Provider=sqloledb;Server=CIAN;Database=cliu;Uid=testuser;Password=;") Rs.ActiveConnection = Conn Rs.Open("Select * From cliu.users") While not Rs.eof Response.Write("user name = " &Rs("UserName").Value & " ") Response.Write(" del ") Response.Write(" ") Rs.MoveNext Wend %>

19. Example of ASP Database Connection-deluserdb.asp <% Dim userid userid = Int(Request.QueryString("id").Item) dim Conn, Rs, mySQL set Conn = Server.CreateObject("ADODB.Connection") ' conn objects set Rs = Server.CreateObject("ADODB.RecordSet")' Record Set Conn.Open ("Provider=sqloledb;Server=CIAN;Database=cliu;Uid=testuser;Password=;") Conn.Execute("cliu.deluser "& userid ) Conn.Close Set Conn = NOTHING Response.Redirect("menu.asp") %>