为什么会报 索引 -4 不是非负数且小于总行数。 这个错误
后台代码如下
ids = CInt(Request( "companyid "))
ds = New DataSet
user_id = (Convert.ToString(Request.QueryString( "user ")))
Dim myconn As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings( "connectionString "))
adapter = New SqlDataAdapter( "Select * from qyry where user_id= ' " & user_id & " ' and lei= ' " & "qyry " & " ' order by id desc ", myconn)
ds = New DataSet
adapter.Fill(ds, "Orders ")
Dim pp As New PagedDataSource
pp.DataSource = ds.Tables( "Orders ").DefaultView
pp.AllowPaging = True
pp.PageSize = 4
Dim nPageCount As Integer '保存总共的数据页面数目
Dim a = ds.Tables( "Orders ").Rows.Count '保存记录总数
Dim nPage As Integer '存放要浏览当前数据页面号
If pp.PageCount Mod pp.PageSize > 0 Then
nPageCount = a \ pp.PageSize
nPageCount += 1
End If
nPage = Convert.ToInt32(Request.QueryString( "Page "))
If Request.QueryString( "Page ") < 1 Then
nPage = 1
End If
If Request.QueryString( "Page ") > nPageCount Then
nPage = nPageCount
End If
pp.CurrentPageIndex = nPage - 1
lblPageCount.Text = "总共 " & a.ToString() + "条纪录 "
lblmsg.Text = ( "  " & "页次: " & nPage.ToString() & "/ " & nPageCount.ToString())

lblmsg.Text += ( "   <A HREF = " " " & Request.CurrentExecutionFilePath & "?user= " & user_id & "&companyid= " & ids & "&page= " & (1).ToString() & " " "> 首 页 </A > ")
' If Not pp.IsFirstPage Then
lblmsg.Text += ( " <A HREF = " " " & Request.CurrentExecutionFilePath & "?user= " & user_id & "&companyid= " & ids & "&page= " & Convert.ToString(nPage - 1) & " " " > 上一页 </A > ")
' End If
' If Not pp.IsLastPage Then
lblmsg.Text += ( " <A HREF = " " " & Request.CurrentExecutionFilePath & "?user= " & user_id & "&companyid= " & ids & "&page= " & Convert.ToString(nPage + 1) & " " " > 下一页 </A > ")
' End If
lblmsg.Text += ( " <A HREF = " " " & Request.CurrentExecutionFilePath & "?user= " & user_id & "&companyid= " & ids & "&page= " & (nPageCount).ToString() & " " " > 尾 页 </A > ")
dstmsg.DataSource = pp
dstmsg.DataBind()

前台是：
<asp:DataList ID= "dstmsg " runat= "server " BorderColor= "ActiveBorder " BorderStyle= "None ">
<itemtemplate>
<table width= "280 " border= "0 " cellspacing= "0 " cellpadding= "0 ">

<tr>
<td height= "25 "> 　 <a href= 'qyry4.aspx?id= <%#container.dataitem( "id ")%> &user= <%#container.dataitem( "user_id ")%> 'title= ' <%# Container.DataItem( "mc " ).ToString() %> '> <%# Left(DataBinder.Eval(Container.DataItem, "mc ").ToString(),22)%> </a> </td>
</tr>
</table>
<table width= "100% " border= "0 " cellspacing= "0 " cellpadding= "0 ">
<tr>
<td width= "280 " height= "1 " background= "image/line.jpg "> </td>
</tr>

</table>
</itemtemplate>
</asp:DataList>
<br>
<asp:Label ID= "lblPageCount " runat= "server "> </asp:Label>
<asp:Label ID= "lblmsg " runat= "server "> </asp:Label>

然后运行以后前台只能读出个数 分页是 1/0 谁帮慢看下

[解决办法]
If pp.PageCount Mod pp.PageSize > 0 Then
nPageCount = a \ pp.PageSize
nPageCount += 1
End If
----------------------------------
这个改下
If pp.PageCount Mod pp.PageSize > 0 Then
nPageCount = a \ pp.PageSize
nPageCount += 1
else
nPageCount=a \ pp.pagesize

End If