悠悠博客 关注Ajax技术与web开发

分页类Pager
<%
Class Pager

Private IUrl
Private IPage
Private IParam
Private IPageSize
Private IPageCount
Private IRecordCount
Private ICurrentPageIndex

Public Property Let Url(ByVal PUrl)
IUrl = PUrl
End Property

Public Property Get Url()
If IUrl = "" Then
If Request.QueryString <> "" Then
Dim query
For Each key In Request.QueryString
If key <> Param Then
query = query & key & "=" & Server.UrlEnCode(Request.QueryString(key)) & "&"
End If
Next
IUrl = Page & "?" & query & Param & "="
Else
IUrl = Page & "?" & Param & "="
End If
End If
Url =IUrl
End Property

Public Property Let Page(ByVal PPage)
IPage = PPage
End Property

Public Property Get Page()
Page = IPage
End Property

Public Property Let Param(ByVal PParam)
IParam = PParam
End Property

Public Property Get Param()
Param = IParam
End Property

Public Property Let PageSize(ByVal PPageSize)
IPageSize = PPageSize
End Property

Public Property Get PageSize()
PageSize = IPageSize
End Property

Public Property Get PageCount()
If (Not IPageCount > 0) Then
IPageCount = IRecordCount \ IPageSize
If (IRecordCount MOD IPageSize) > 0 Or IRecordCount = 0 Then
IPageCount = IPageCount + 1
End If
End If
PageCount = IPageCount
End Property

Public Property Let RecordCount(ByVal PRecordCount)
IRecordCount = PRecordCount
End Property

Public Property Get RecordCount()
RecordCount = IRecordCount
End Property

Public Property Let CurrentPageIndex(ByVal PCurrentPageIndex)
ICurrentPageIndex = PCurrentPageIndex
End Property

Public Property Get CurrentPageIndex()
If ICurrentPageIndex = "" Then
If Request.QueryString(Param) = "" Then
ICurrentPageIndex = 1
Else
If IsNumeric(Request.QueryString(Param)) Then
ICurrentPageIndex = CInt(Request.QueryString(Param))
If ICurrentPageIndex < 1 Then ICurrentPageIndex = 1
If ICurrentPageIndex > PageCount Then ICurrentPageIndex = PageCount
Else ICurrentPageIndex = 1
End If
End If
End If
CurrentPageIndex = ICurrentPageIndex
End Property

Private Sub Class_Initialize()
With Me
.Param = "page"
.PageSize = 10
End With
End Sub

Private Sub Class_Terminate()
End Sub

Private Function Navigation()
Dim Nav
If CurrentPageIndex = 1 Then
Nav = Nav & " 首页 上页 "
Else
Nav = Nav & " <a href=""" & Url & "1"">首页</a> <a href=""" & Url & (CurrentPageIndex - 1) & """>上页</a> "
End If

If CurrentPageIndex = PageCount Or PageCount = 0 Then
Nav = Nav & " 下页 尾页 "
Else
Nav = Nav & " <a href=""" & Url & (CurrentPageIndex + 1) & """>下页</a> <a href=""" & Url & PageCount & """>尾页</a> "
End If

Navigation = Nav
End Function

Private Function SelectMenu()
Dim Selector
Dim i : i = 1
While i <= PageCount
If i = ICurrentPageIndex Then
Selector = Selector & "<option value=""" & i & """ selected=""true"">" & i &"</option>" & vbCrLf
Else
Selector = Selector & "<option value=""" & i & """>" & i &"</option>" & vbCrLf
End If
i = i + 1
Wend
SelectMenu = vbCrLf & "<select style=""font:9px Tahoma"" onchange=""location=''" & Url & "'' + this.value"">" & vbCrLf & Selector & vbCrLf & "</select>" & vbCrLf
End Function

Public Sub Display()
If RecordCount > 0 Then
%>
<style>b{font:bold}</style>
<div style="text-align:right;width:100%">>>分页 <%=Navigation()%> 页次：<b><%=ICurrentPageIndex%></b>/<b><%= PageCount%></b>页 <b><%=PageSize%></b>个记录/页转到<%=SelectMenu()%>页 共 <b><%=IRecordCount%></b>条记录</div>
<%
Else
Response.Write("<div style=""text-align:center"">暂无记录</div>")
End If
End Sub

End Class
%>