DataPager在分页后丢失数据？

Question

我有一个DataPager，用来浏览我的搜索结果。我的DataPager在点击并分页后失去了它的结果，例如，如果我按2-3页，我只会得到像ID这样的标签，而没有数据。

标记

 <asp:ListView runat="server" ID="LVCAdmin">
     <!-- Templates here -->
 </asp:ListView>

<asp:DataPager ID="DataPager1" PagedControlID="LVCAdmin" runat="server">

     <Fields>
         <asp:NextPreviousPagerField ButtonType="Button" 
         ShowFirstPageButton="True" ShowNextPageButton="False"
         ShowPreviousPageButton="False" />

         <asp:NumericPagerField />

         <asp:NextPreviousPagerField ButtonType="Button"
             ShowLastPageButton="True" ShowNextPageButton="False"
             ShowPreviousPageButton="False" />
      </Fields>

</asp:DataPager>

CodeBehind

protected void btnSubmit_Click(object sender, EventArgs e)
{
    string keyword = txtSearch.Text.Trim();

    List<dynamic> Cresults = AdminSearchAll(keyword);

    if (Cresults.Count != 0)
    {    
        LVCAdmin.DataSource = Cresults;
        LVCAdmin.DataBind();

        NoResults.Visible = false;
        LVCAdmin.Visible = true;
    }
    else
    {
        NoResults.Visible = true;

        LVCAdmin.Visible = false;
    }
}

Answer 1

我想通了。我在我的OnPreRender="Pager_PreRender"控件中添加了一个DataPager。下面是方法。到目前为止，它已经按计划运作了。

 protected void Pager_PreRender(object sender, EventArgs e)
        {
            if (IsPostBack)
            {
                   string keyword = txtSearch.Text.Trim();


                    List<dynamic> Cresults = AdminSearchAll(keyword);


                    if (Cresults.Count != 0)
                    {

                        LVCAdmin.DataSource = Cresults;
                        LVCAdmin.DataBind();

                        NoResults.Visible = false;
                        LVCAdmin.Visible = true;
                    }
                    else
                    {

                        NoResults.Visible = true;

                        LVCAdmin.Visible = false;


                    }

                }

        }