Events order problem

[Moisoiu Andrei]

Hi,

I have an event order problem on my radgrid. The problem is that the OnPageIndexChanged is raised after OnNeedDataSource and the pager index is the old one. (if I press the '2' button from the pagger the value of the ResultRadGrid.CurrentPageIndex is 0 and when I press the '1' button againd the ResultRadGrid.CurrentPageIndex is 1). I need to call the OnPageIndexChanged  before OnNeedDataSource  for changing the page index value to new page index value. 

My code:

<%@ Page Title="" Language="C#" MasterPageFile="~/Page/ResumeAdvisor/MasterPage/ResumeAdvisor.master" ValidateRequest="false"
    AutoEventWireup="true" CodeBehind="MyApplicants.aspx.cs" Inherits="w000250.FrontOffice.Page.ResumeAdvisor.Workflow.MyApplicants"
    Culture="auto" meta:resourcekey="PageResource1" UICulture="auto" %>

<%@ Register Src="../UserControl/SearchPanel.ascx" TagName="SearchPanel" TagPrefix="uc1" %>
<%@ Register Src="../UserControl/MemorizeSearch.ascx" TagName="MemorizeSearchPanel" TagPrefix="uc" %>
<%@ Register Src="../UserControl/CandidateView.ascx" TagName="CandidateView" TagPrefix="uc2" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<asp:Content ID="Content1" ContentPlaceHolderID="HeadContentPlaceHolder" runat="server">

        <script language="javascript" type="text/javascript">
            //<![CDATA[
            function grant_approval(arg) {
                if (arg == true) {
                    $find("<%= RadAjaxManager1.ClientID %>").ajaxRequest("GiveLabel");
                }
            }

            function withdraw_approval(arg) {
                if (arg == true) {
                    $find("<%= RadAjaxManager1.ClientID %>").ajaxRequest("RemoveLabel");
                }
            }

            function removes_approval(arg) {
                if (arg == true) {
                    $find("<%= RadAjaxManager1.ClientID %>").ajaxRequest("RemoveFromCandidates");
                }
            }

            //]]>
        </script>
</asp:Content>
 <telerik:RadGrid ID="ResultRadGrid" runat="server" AutoGenerateColumns="False" AllowMultiRowSelection="True"
            AllowPaging="true" AllowSorting="True" OnPageIndexChanged="ResultRadGrid_PageIndexChanged"
            PagerStyle-Mode="NextPrevAndNumeric" PagerStyle-Position="TopAndBottom" PageSize="5"
            OnNeedDataSource="ResultRadGrid_OnNeedDataSource" OnItemCommand="ResultRadGrid_OnItemCommand"
            AllowCustomPaging="true" VirtualItemCount="10000" PagerStyle-EnableSEOPaging="false"
            GridLines="Vertical" PagerStyle-SEOPagingQueryStringKey="page" OnItemCreated="ResultRadGrid_OnItemCreated">
            <ItemStyle />
            <AlternatingItemStyle />
            <MasterTableView CellSpacing="-1" CommandItemDisplay="Bottom">
                <PagerStyle Mode="NumericPages" Position="TopAndBottom" AlwaysVisible="true" />
                <%-- Pager - Modifier le panel numeric --%>
                <PagerTemplate>
                    <div class="pager">
                        <span class="pagerPrev">
                            <asp:Button ID="ButtonFirst" runat="server" OnClientClick="changePage('first'); return false;"
                                CommandName="Page" CommandArgument="First" Text="" CssClass="PagerButton FirstPage" />
                            <asp:Button ID="ButtonPrev" runat="server" OnClientClick="changePage('prev'); return false;"
                                CommandName="Page" CommandArgument="Prev" Text="" CssClass="PagerButton PrevPage" />
                        </span>
                        <asp:Panel runat="server" ID="NumericPagerPlaceHolder" CssClass="pagerNumber" />
                        <span class="pagerNext">
                            <asp:Button ID="ButtonNext" runat="server" OnClientClick="changePage('next'); return false;"
                                CommandName="Page" CommandArgument="Next" Text="" CssClass="PagerButton NextPage" />
                            <asp:Button ID="ButtonLast" runat="server" OnClientClick="changePage('last'); return false;"
                                CommandName="Page" CommandArgument="Last" Text="" CssClass="PagerButton LastPage" />
                        </span>
                    </div>
                </PagerTemplate>
                <CommandItemTemplate>
                    <asp:Button ID="NoTrackingButton" runat="server" CssClass="buttonLong" OnClick="NoTrackingButton_Click"
                        Text="Ne souhaite pas être suivi" meta:resourcekey="NoTrackingButtonResource1" />
                    <asp:Button ID="RemoveFromCandidatesButton" runat="server" CssClass="buttonLong"
                        Text='Supprimer de "Mes candidats"' meta:resourcekey="RemoveFromCandidatesButtonResource1"
                        Visible="true" Enabled="true" />
                    <asp:Button ID="LabelizeCandidatesButton" runat="server" CssClass="buttonBig" Text="Accorder le label"
                        meta:resourcekey="LabelizeCandidatesButtonResource1" Visible="true" Enabled="true" />
                    <asp:Button ID="UnLabelizeCandidatesButton" runat="server" CssClass="buttonBig" Text="Retirer le label"
                        meta:resourcekey="UnLabelizeCandidatesButtonResource1" Visible="true" Enabled="true" />
                    <asp:Button ID="ContactButton" runat="server" OnClick="ContactButton_Click" CssClass="buttonBig"
                        Text="Contacter" meta:resourcekey="ContactButtonResource1" Visible="true" Enabled="true" />
                </CommandItemTemplate>
                <NoRecordsTemplate>
                    <asp:Label ID="NoResultLabel" runat="server" Text="Aucun résultat ne correspond  à votre recherche"></asp:Label></NoRecordsTemplate>
                <RowIndicatorColumn>
                    <HeaderStyle Width="20px" />
                </RowIndicatorColumn>
                <ExpandCollapseColumn>
                    <HeaderStyle Width="20px" />
                </ExpandCollapseColumn>
                <Columns>
                    <telerik:GridTemplateColumn UniqueName="DataItemTemplateColumn">
                        <ItemStyle CssClass="dataItem" />
                        <ItemTemplate>
                            <uc2:CandidateView ID="CandidateViewUC" runat="server" DataSource="<%# Container.DataItem %>"
                                EnableProfileLink="true" EnableContactLink="true" IsMyApplicantPage="true" EnableAddToCandidateLink="false"
                                EnableSeeCompleteFolder="true" EnableRemoveFromCandidatesLink="true" EnableAddOrRemoveLabelLink="true"
                                ParentUrl="~/Page/ResumeAdvisor/Workflow/MyApplicants.aspx" />
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
                    <telerik:GridTemplateColumn UniqueName="CheckBoxTemplateColumn">
                        <ItemStyle CssClass="clientSelect" HorizontalAlign="Center" VerticalAlign="Middle"
                            Width="30px" />
                        <HeaderStyle CssClass="clientSelect" Height="30" Width="30px" HorizontalAlign="Center" />
                        <HeaderTemplate>
                            <asp:CheckBox ID="headerChkbox" runat="server" OnCheckedChanged="ToggleSelectedState"
                                AutoPostBack="True" />
                        </HeaderTemplate>
                        <ItemTemplate>
                            <div class="clientSelectContent">
                                <asp:CheckBox ID="selecteditem" runat="server" OnCheckedChanged="ToggleRowSelection"
                                    AutoPostBack="true" />
                            </div>
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
                </Columns>
            </MasterTableView>
        </telerik:RadGrid>
 <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="RadAjaxLoadingPanel1"
        OnAjaxRequest="RadAjaxManager1_AjaxRequest" AsyncPostBackTimeOut="600000">
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="RadAjaxManager1">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="ResultRadGrid" />
                </UpdatedControls>
            </telerik:AjaxSetting>
            <telerik:AjaxSetting AjaxControlID="ResultRadGrid">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="ResultRadGrid" />
                </UpdatedControls>
            </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManager>
    <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Skin="Default">
    </telerik:RadAjaxLoadingPanel>

my C# code

protected void ResultRadGrid_OnItemCreated(object sender, Telerik.Web.UI.GridItemEventArgs e)
        {
            if (e.Item is GridPagerItem)
            {
                GridPagerItem gridPager = e.Item as GridPagerItem;
                Control numericPagerControl = gridPager.GetNumericPager();
                Control placeHolder = gridPager.FindControl("NumericPagerPlaceHolder");
                placeHolder.Controls.Add(numericPagerControl);
            }
        }

private List<AbgService.Resume> SearchResume()
        {
            List<AbgService.Resume> resumes = Business.ResumeAdvisor.ResumeAdvisorManagement.FindMyApplicants(MyResumeSearchPanel.ParamSpecialisationId, MyResumeSearchPanel.ParamExperienceLevelId,
                        MyResumeSearchPanel.ParamQuickSearch, MyResumeSearchPanel.ParamFilterResumeWithLabel, MyResumeSearchPanel.paramEmail,
                        MyResumeSearchPanel.paramState == ResumeStateEnum.Suspended || MyResumeSearchPanel.paramState == null,
                        MyResumeSearchPanel.paramState == ResumeStateEnum.Published || MyResumeSearchPanel.paramState == null,
                        MyResumeSearchPanel.paramState == ResumeStateEnum.Preparation || MyResumeSearchPanel.paramState == null,
                        MyResumeSearchPanel.paramPromotion, MyResumeSearchPanel.paramDoctorateSchool, MyResumeSearchPanel.paramDiplomaInstitution,
                        MyResumeSearchPanel.paramCurrentSituation, MyResumeSearchPanel.ParamSite, MyResumeSearchPanel.ParamResumesPerPage, ResultRadGrid.CurrentPageIndex);
            if (resumes != null)
            {
                resumes.Sort(ResumeComparer.GetResumeComparer(MyResumeSearchPanel.ParamSortBy));

                int itemsNumber =Business.ResumeAdvisor.ResumeAdvisorManagement.FindMyApplicantsCount(MyResumeSearchPanel.ParamSpecialisationId, MyResumeSearchPanel.ParamExperienceLevelId,
                          MyResumeSearchPanel.ParamQuickSearch, MyResumeSearchPanel.ParamFilterResumeWithLabel, MyResumeSearchPanel.paramEmail,
                          MyResumeSearchPanel.paramState == ResumeStateEnum.Suspended || MyResumeSearchPanel.paramState == null,
                          MyResumeSearchPanel.paramState == ResumeStateEnum.Published || MyResumeSearchPanel.paramState == null,
                          MyResumeSearchPanel.paramState == ResumeStateEnum.Preparation || MyResumeSearchPanel.paramState == null,
                          MyResumeSearchPanel.paramPromotion, MyResumeSearchPanel.paramDoctorateSchool, MyResumeSearchPanel.paramDiplomaInstitution,
                          MyResumeSearchPanel.paramCurrentSituation, MyResumeSearchPanel.ParamSite, MyResumeSearchPanel.ParamResumesPerPage, ResultRadGrid.CurrentPageIndex);
                ResultRadGrid.MasterTableView.VirtualItemCount = itemsNumber;
                ResumeNumberValue.Text = itemsNumber.ToString();

                if (resumes.Count == 0)
                {
                    DisplayGridResults.Visible = false;
                }
                else
                {
                    DisplayGridResults.Visible = true;
                }
            }
            return resumes;
        }

protected void ResultRadGrid_OnNeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
        {
            List<AbgService.Resume> resumeArrayToDisplay = this.SearchResume();
            ResultRadGrid.DataSource = resumeArrayToDisplay;

        }

        protected void ResultRadGrid_PageIndexChanged(object source, Telerik.Web.UI.GridPageChangedEventArgs e)
        {
            //a
        }

Thanks.

[Moisoiu Andrei]

Or maybe can someone help me to find the modified (after click) ResultRadGrid.CurrentPageIndex on OnNeedDataSource.

[Tsvetina]

Hi,

Unless you have disabled the ViewState of your page, the NeedDataSource should be firing after PageIndexChanged. If ViewState is indeed disabled, then NeedDataSource will be firing twice, before and after PageIndexChanged. you can view this help article for more information on RadGrid's event sequence:
Event sequence

Greetings,
Tsvetina
the Telerik team