Pager on my Listview not working Asp.net C#

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Error-- when i click on Previous button after click on Next button ,or when i click on last button this error message i get and in ever scenario it doesnot Page my List of records--

Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.

ASP.NET

 <asp:ListView ID="ListJobs" runat="server">
   <LayoutTemplate>
      <table style="border: solid 2px #336699; width:800px; " cellspacing="0" cellpadding="3" rules="all">
         <tr style="background-color: #336699; color: White;">
            <th> Posted Date </th>
            <th> Jobtitle </th>
            <th> Location </th>
         </tr>        
         
         <tr>
            <asp:PlaceHolder ID="itemPlaceHolder" runat="server" />
         </tr>
         
                  
         <tr id="Tr2"  runat="server" class="TablePager">  
                        <td id="Td4"  runat="server" colspan="3">  
                            <asp:DataPager ID="DataPager1" runat="server" PagedControlID="ListJobs" PageSize="3">  
                                <Fields>  
                                    <asp:NextPreviousPagerField   
                                        ButtonType="Button"   
                                        ShowFirstPageButton="true"  
                                        ShowNextPageButton="true"  
                                        ShowPreviousPageButton="false"  
                                        ButtonCssClass="ButtonCSS"  
                                        />  
                                    <asp:NumericPagerField   
                                        NumericButtonCssClass="NumericButtonCSS"  
                                        CurrentPageLabelCssClass="CurrentPageLabelCSS"  
                                        NextPreviousButtonCssClass="NextPreviousButtonCSS"  
                                        />  
                                    <asp:NextPreviousPagerField   
                                        ButtonType="Button"  
                                        ShowLastPageButton="true"  
                                        ShowNextPageButton="false"  
                                        ButtonCssClass="ButtonCSS"  
                                        />  
                                </Fields>  
                            </asp:DataPager>  
                        </td>  
                    </tr>         
        
      </table>  
   </LayoutTemplate>
   <ItemTemplate>
      <tr>
         <td   style=" width:150px;" ><%# Eval("CreatedDate")%></td>
         <td  style=" width:500px;" > <a href='<%#"JobDetail.aspx?Name="+Eval("Job_Id")%>'</a><%# Eval("JobTitle")%></td>
         <td  style=" width:150px;"><%# Eval("Location")%></td>
      </tr>
   </ItemTemplate>
   <AlternatingItemTemplate>
      <tr style="background-color: #dadada;">         
         <td   style=" width:150px;" ><%# Eval("CreatedDate")%></td>
         <td  style=" width:500px;" > <a href='<%#"JobDetail.aspx?Name="+Eval("Job_Id")%>'</a><%# Eval("JobTitle")%></td>
         <td  style=" width:150px;"><%# Eval("Location")%></td>
      </tr>
   </AlternatingItemTemplate>
   
   <EmptyDataTemplate>
       No Record Found 
   </EmptyDataTemplate>
</asp:ListView>

Posted 14-Mar-13 3:01am

sr_24

Updated 14-Mar-13 4:23am

Richard C Bishop

v4

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2 solutions

Solution 1

Use DataPager like this article Effective paging with List View control in ASP.NET[^]

Posted 14-Mar-13 3:07am

Abdul Quader Mamun

Comments

sr_24 14-Mar-13 9:16am

thanks for u reply but ..have u find any thing wrong in my cod e please have a look..pls

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sr_24 · Accepted Answer · 2013-03-14T04:20:00

The problem is due to the binding occuring on the Page_Load event.

For this to work as expected, the binding needs to happen in the DataPager's OnPreRender event, not in the Page_Load.

Source:

<asp:DataPager ID="ListPager" PagedControlID="MyList" runat="server" PageSize="10"
    OnPreRender="ListPager_PreRender">

<Fields>
        <asp:NumericPagerField  />
    </Fields>
</asp:DataPager>

Code Behind:

protected void Page_Load(object sender, EventArgs e)
{
    //Binding code moved from Page_Load
    //to the ListView's PreRender event
}

protected void ListPager_PreRender(object sender, EventArgs e)
{
    MyList.DataSource = GetSomeList();
    MyList.DataBind();
}