为什么Gridview Page IndexChanging只能在f / w方向工作？ [英] Why does Gridview Page IndexChanging works in f/w direction only?

问题描述

早安伙伴们，



我的Gridview页面仅适用于第1页到第2页和第3页......

但是如果我我在第3页并点击第2或第1页它没有做任何事情，而只是坐在第3页本身。

这是我的代码

< asp：GridView ID =   gdvAll runat =   server AllowPaging =   true PageSize =   10 AllowSorting =   true 
 Style =   vertical-align：middle; Horizo​​ntalAlign =   Center OnPageIndexChanging =   ongdvPageIndex_Clicked 
 AutoGenerateColumns =   false OnSelectedIndexChanged =   OnSelectedIndexChanged EnableSortingAndPagingCallbacks =   true 
 CssClass =   Grid  AlternatingRowStyle-CssClass =   alt PagerStyle-CssClass =   pgr> 

受保护的子ongdvPageIndex_Clicked （ByVal Sender As Object，ByVal e As GridViewPageEventArgs）
尝试
 gdvAll.PageIndex = e.NewPageIndex 
 gdvAll.DataSource = ViewState（gdvAll）
 gdvAll.DataBind（） 
 Catch ex As Excep 
 LogError.LogErrorIntoTextFile（例如，ongdvPage_Clicked（））
结束尝试
结束子
 

任何人都可以在Gridview中找出这种奇怪的页面行为吗？

解决方案

我相信你的ViewState（gdvAll）是来自另一个子程序的数据集与某种SQL或其他。此代码将按升序或降序对数据进行排序，以减轻您的页面问题：

 受保护的  Sub  gdvAll_OnSorting（ ByVal  sender  As   Object ， ByVal  e  As  GridViewSortEventArgs）句柄 GridView1.Sorting 
  Dim  sortingdirection，sortby 
  If  e.SortDirection =   ASC 然后 
 sortingdirection =   DESC 
  Else  
 sortingdirection =   ASC 
 结束 如果 
 sortby = e.SortExpression &安培;  & sortingdirection 
  Dim  MyDataSet  As  新 DataSet = ViewState（  gdvAll）
  Dim  MyDataTable  As   New  DataTable（）
 MyDataTable = MyDataSet.Tables（  0 ）
  Dim  MyDataView  As  新 DataView（MyDataTable）
 MyDataView.Sort = sortby 
 gdvAll.DataSource = ViewState（   gdvAll）
 GridView1.DataBind（）
 结束 < span class =code-keyword> Sub  
 

< asp：GridView ID =   gdvAll runat =   server AllowPaging = < span class =code-string>  true OnPageSize =   10 AllowSorting =   true OnSorting =   gdvAll1_OnSorting 
 Style =   vertical-align：middle; Horizo​​ntalAlign =   Center  OnPageIndexChanging =   ongdvPageIndex_Clicked 
 AutoGenerateColumns =   false OnSelectedIndexChanged =   OnSelectedIndexChanged EnableSortingAndPagingCallbacks =   true 
 CssClass =  网格 AlternatingRowStyle-CssClass =   alt PagerStyle-CssClass =   pgr> 

Good Morning guys,

My Gridview page only works from 1st page to 2nd and to 3rd...
But if I am on 3rd page and click on 2nd or 1st it doesn't do anything, instead just sits on page 3 itself.
Here is my code

<asp:GridView ID="gdvAll" runat="server" AllowPaging="true" PageSize="10" AllowSorting="true"
                               Style="vertical-align: middle;" HorizontalAlign="Center" OnPageIndexChanging ="ongdvPageIndex_Clicked"
                               AutoGenerateColumns="false" OnSelectedIndexChanged="OnSelectedIndexChanged" EnableSortingAndPagingCallbacks="true"
                               CssClass="Grid" AlternatingRowStyle-CssClass="alt" PagerStyle-CssClass="pgr">

Protected Sub ongdvPageIndex_Clicked(ByVal Sender As Object, ByVal e As GridViewPageEventArgs)
    Try
        gdvAll.PageIndex = e.NewPageIndex
        gdvAll.DataSource = ViewState("gdvAll")
        gdvAll.DataBind()
    Catch ex As Exception
        LogError.LogErrorIntoTextFile(ex, "ongdvPage_Clicked()")
    End Try
End Sub

Can anyone figure out this weird behavior of pages in Gridview?

解决方案

I believe your ViewState("gdvAll") is a dataset from another Subroutine with some sort of SQL or other. This code will sort the data by Ascending or Descending alleviating you Page Problem:

Protected Sub gdvAll_OnSorting(ByVal sender As Object, ByVal e As GridViewSortEventArgs) Handles GridView1.Sorting
      Dim sortingdirection, sortby
      If e.SortDirection = "ASC" Then
          sortingdirection = "DESC"
      Else
          sortingdirection = "ASC"
      End If
      sortby = e.SortExpression & " " & sortingdirection
      Dim MyDataSet As New DataSet = ViewState("gdvAll")
      Dim MyDataTable As New DataTable()
      MyDataTable = MyDataSet.Tables(0)
      Dim MyDataView As New DataView(MyDataTable)
      MyDataView.Sort = sortby
      gdvAll.DataSource = ViewState("gdvAll")
      GridView1.DataBind()
  End Sub

<asp:GridView ID="gdvAll" runat="server" AllowPaging="true" OnPageSize="10" AllowSorting="true"  OnSorting="gdvAll1_OnSorting"
                               Style="vertical-align: middle;" HorizontalAlign="Center" OnPageIndexChanging ="ongdvPageIndex_Clicked"
                               AutoGenerateColumns="false" OnSelectedIndexChanged="OnSelectedIndexChanged" EnableSortingAndPagingCallbacks="true"
                               CssClass="Grid" AlternatingRowStyle-CssClass="alt" PagerStyle-CssClass="pgr">

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