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[类] 分页类

作者：未知 来源：月光软件站 加入时间：2005-2-28　月光软件站
根据ado纪录集自动生成列表和分页，需要先生成recordset:rs_Grid
<%
'===========================================================
'分页类,大体思想由.Net的DataGrid的使用方式而来
'功能:自动生成datagrid列表头和内容，以及分页栏
'根据网友bubuy (澎湃 NoMoneyToBuy)得分页函数修改成类
'使用示例:
'dim DG
'dim Url
'dim Fld(2)
'dim FldName(2)
'dim FldWidth(2)
'Fld(0) = "ID"
'Fld(1) = "Title"
'Fld(2) = "Input_Date"
'FldName(0) = "编号"
'FldName(1) = "标题"
'FldName(2) = "录入日期"
'FldWidth(0) = "10%"
'FldWidth(1) = "60%"
'FldWidth(2) = "30%"
'set DG = new DataGrid
'DG.DataSource = rs_Grid
'DG.titleColor = "#DCE19D"
'DG.PageSize = 1
'DG.Fields = Fld
'DG.FieldsName = FldName
'DG.fieldWidth = FldWidth
'Url = request.ServerVariables("URL") & "?Param=testParameter"//存在原有参数的情况
'DG.Url = Url
'DG.Generate()
'=============Designed By windancer 2003.10.17===============
Class DataGrid
Private obj_RecordSet ' recordset
Private int_PageSize ' 每页纪录数
'两个数组保存数据库字段名和中文名称
Private Arr_Field ' 数据库字段
Private Arr_FieldName ' 字段显示名称()
Private Arr_FieldWidth ' 字段显示宽度
Private str_TitleColor ' 表头颜色#efffce
Private str_Url '请求的URL
Private str_Error ' 出错信息

Private Sub Class_Initialize()
int_PageSize = 10
str_TitleColor = "#ffffff"
str_Error = ""
End Sub
'===============================================================
'属性信息
'================================================================
'-----------------------------------
'数据源,暂时只支持RecordSet
'-----------------------------------
Public Property Let dataSource(obj)
set obj_RecordSet = obj
End Property

Public Property Let pageSize(intvalue)
int_PageSize = intvalue
End Property

Public Property Get pageSize
PageSize= int_Categoryid
End Property

Public Property Let Fields(Arr)
Arr_Field = Arr
End Property

Public Property Get Fields
Fields= Arr_Field
End Property

Public Property Let fieldsName(Arr)
Arr_FieldName = Arr
End Property

Public Property Get fieldsName
fieldsName= Arr_FieldName
End Property

Public Property Let fieldWidth(Arr)
Arr_FieldWidth = Arr
End Property

Public Property Get fieldWidth
fieldWidth= Arr_FieldWidth
End Property

Public Property Let titleColor(strvalue)
str_TitleColor = strvalue
End Property

Public Property Get titleColor
titleColor= str_TitleColor
End Property
'-----------------------------------------------------
'这个属性是为了保存Url路径
'如果当前路径带有参数,那么就用&Page=x,否则就用?Page=x
'------------------------------------------------------
Public Property Let Url(Strvalue)
str_Url = Strvalue
End Property

Public Property Get Url
Url= str_Url
End Property

'================================================================
'方法
'================================================================
'----------------------------------------------------------------
'显示当前错误
'----------------------------------------------------------------
Private Sub ShowLastError()
response.Write(str_Error)
response.End()
End Sub
'----------------------------------------------------------------
'Generate()
'利用ado分页
'-----------------------------------------------------------------
Public Sub Generate()
'----检查参数--------------------------
Check
'---------变量声明-----------------------------------
Dim FieldCount '显示字段
FieldCount = Ubound(Arr_Field) + 1
Dim CurrentPage '当前页
Dim PgCount '总页数
Dim RecCount '记录数，本来用rs.recordCount可以取到，保存下来效率会比较高
Dim HasOtherParam 'URL是否包含其他参数
Dim PageParam '当前分页Url参数
Dim PageInfomation '当前分页状态信息
Dim Seperator '设置分隔符
Seperator = "  "
'-------------处理Url参数---------------------------
if instr(str_Url,"?")>0 then
HasOtherParam = true
PageParam = "&Page="
else
HasOtherParam = false
PageParam = "?Page="
end if
'----------获取当前页--------------------------------
CurrentPage = request.QueryString("Page")
if CurrentPage="" then
CurrentPage=1
else
CurrentPage=Cint(CurrentPage)
end if
'-----------处理数据源------------------------------
obj_RecordSet.PageSize = int_PageSize
RecCount = obj_RecordSet.RecordCount
PgCount = obj_RecordSet.PageCount
IF obj_RecordSet.Eof Then
Response.Write("<center><font stlye='font-size:14px;' color='#ff0000'>对不起，没有记录！</font></center>")
Else
'-----------处理ADO分页----------------------------
IF CurrentPage < 1 Then
CurrentPage = 1
Else
If CurrentPage>PgCount Then
CurrentPage = PgCount
End If
End IF
obj_RecordSet.absolutepage = CurrentPage

Response.Write("<table width=100% border='0' cellpadding='0' cellspacing='0' style='font-size:12px;'>")
'---------------翻页链接-----------------------------
Dim FirstLink,PrevLink,NextLink,LastLink '定义向上和向下翻的变量
'-----------------------首页-------------------------
if CurrentPage>1 then
FirstLink = "<a href='" & URL & PageParam & "1'>首页</a>"
PrevLink = "<a href='" & URL & PageParam & Cstr(CurrentPage-1) & "'>上一页</a>"
else
FirstLink = "首页"
PrevLink = "上一页"
end if
'------------下一页----------------
if CurrentPage<PgCount then
NextLink = "<a href='" & URL & PageParam & Cstr(CurrentPage+1) & "'>下一页</a>"
LastLink = "<a href='" & URL & PageParam & PgCount & "'>尾页</a>"
else
NextLink = "下一页"
LastLink = "尾页"
end if
PageInfomation = FirstLink & Seperator & PrevLink & Seperator & NextLink & Seperator & LastLink & Seperator & "每页" & Cstr(int_PageSize) & "条记录" & Seperator & "共" & PgCount & "页" & Seperator & "目前第" & CurrentPage & "页" & Seperator
Response.Write("<tr><td align=center>")
Response.Write("<table width='100%' border='1' cellpadding='2' cellspacing='2' bordercolor='#999999'>")
'---------------设置表头-----------------
Response.Write("<tr bgcolor='" & str_TitleColor & "'>")
Dim i
For i=0 to FieldCount -1
Response.Write("<td align='center' width='" & Arr_FieldWidth(i) & "'><font style='font-size:14px;'><b>" & Arr_FieldName(i) & "</b></font></td>")
Next
Response.Write("</tr>")
'---------------------输出内容---------------------------------
i=0
While (not obj_RecordSet.EOF) and i<int_PageSize
Dim Cursor
Response.Write("<tr>")
For Cursor = 0 to FieldCount -1
Response.Write("<td align='center'>" & obj_RecordSet(Arr_Field(Cursor)) & "</td>")
Next
Response.Write("</tr>")
i=i+1
obj_RecordSet.MoveNext
Wend
'------------------------输出分页条------------------------------------
Response.Write("<tr><td align='right' colspan='" & Cstr(FieldCount) & "'>" & PageInfomation & "</td></tr>")
response.Write("</table></td></tr></table>")
End IF
End Sub
'----------检查参数是否正确---------------
Private Sub Check()
if Ubound(Arr_Field)<>Ubound(Arr_FieldName) then
str_Error="Fields数组和FieldName数组维数必须相同"
end if
if obj_RecordSet=empty then
str_Error="数据源不能为空,请设置dataSource属性"
end if
if int_PageSize="" then
str_Error="数据源不能为空"
end if
ShowLastError
End Sub
End Class


%>

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