类的定义2

这里采用类的属性定义方法。

<%
''声明一个名为myclass的类
Class myclass

Private a1,b1

''类的初始化
Private Sub Class_Initialize
a1=0
b1=0
End Sub

''定义一个属性
Public Property Let width(ax)
a1=ax
End Property

''定义另个一个属性
Public Property Let height(bx)
b1=bx
End Property

''计算两个属性值的结果，得到一个新的属性
Public Property Get area
area=b1*a1
End Property

End Class

Set tianya=New myclass ''定义一个名为tianya的对象myclass的实例
tianya.width=50
tianya.height=60
response.write tianya.area
%>

一个完全数据库管理的asp类模型

'天涯风云原创

先建一个数据库user,有一个表名为user,
表里有三个字段,分别为id,name,content

先写数据库连接文件:
'conn.asp

<%
StrSQL="DBQ="+server.mappath("user.mdb")+";DRIVER={Microsoft Access Driver (*.mdb)};"
Set conn=server.createobject("ADODB.CONNECTION")
Conn.open StrSQL
%>

构造userclass类:
,mycls.asp
<%
Class userclass
Private id,name,content

Private Sub Class_Initialize()     '类的初始化,连接数据库
username=""
usercontent=""
end sub

'以下设置类的几个属性
Public Property Let userid(vNewvalue)
id=Cint(vNewvalue)
End Property

Public Property Get userid
userid=id
End Property

Public Property Let username(vNewvalue)
name=vNewvalue
End Property

Public Property Get username
username=name
End Property

Public Property Let usercontent(vNewvalue)
content=vNewvalue
End Property

Public Property Get usercontent
usercontent=content
End Property

'添加记录
Public sub adduser()
if username <> "" and usercontent <> "" then
Set rs = Server.createobject("adodb.Recordset")
SQL="select * from user"
rs.Open SQL,Conn,1,3
rs.AddNew
rs("name") = username
rs("Content") = usercontent
rs.update
rs.Close
Set rs = Nothing
Response.write "添加记录成功!"
end if
end sub

'显示一条记录
Public sub showuser()
set rs=server.createobject("adodb.recordset")
sql="select * from user where id=" & userid
rs.open sql,conn,1,3
username=rs("name")
usercontent=rs("content")
rs.close
end sub

'编辑记录
Public sub edit()
set rs=server.createobject("adodb.recordset")
sql="select * from user where id=" & userid
rs.open sql,conn,1,1
username=rs("name")
usercontent=rs("content")
rs.close
end sub

'保存编辑
Public sub saveedit()
set rs=server.createobject("adodb.recordset")
sql="select * from user where id =" & userid
rs.open sql,conn,1,3
rs("name")=username
rs("content")=usercontent
rs.update
rs.close
Response.write "更新记录成功!"
end sub

'删除记录
public sub deluser()
set rs=server.createobject("adodb.recordset")
sql="delete from user where id="& userid
rs.open sql,conn,1,1
set rs=nothing
Response.write "删除记录成功!"
end sub

'挑战分页显示~~！！
public sub list(n)
dim page
page=request("page")
PageSize = n
dim rs,strSQL,news
strSQL ="select * from user ORDER BY id DESC"

Set rs = Server.createObject("ADODB.Recordset")
rs.open strSQL,Conn,3,3
rs.PageSize = PageSize
totalfilm=rs.recordcount
pgnum=rs.Pagecount
if page="" or clng(page)<1 then page=1
if clng(page) > pgnum then page=pgnum
if pgnum>0 then rs.AbsolutePage=page

if rs.eof then
response.write "<font color='#003366' class='3dfont'>没有记录!</font>"
else
count=0
do while not (rs.eof or rs.bof) and count<rs.PageSize
with response
.write "<table><tr><td> "
.write  rs("id")&" "
.write "<a href=show.asp?id="&rs("id")&">"
.write rs("name")
.write "</a>  "
.write "内容: "&rs("content")
.write "</td></tr></table>"
end with
rs.movenext
count=count+1
loop
end if
with response
.write "<table><tr><td> 共<b>"
.write rs.pagecount
.write "</b>页"
for i=1 to rs.pagecount
.write " <a href=list.asp?page="&i&">"
.write i
.write "</a>"
next
rs.close
set rs=nothing
.write "</td></tr></table>"
end with
end sub

'类退出后,作清理工作
Private Sub class_terminate()
If IsObject(Conn) Then Conn.Close:Set Conn = Nothing
End Sub
End Class
%>