RadDataPager not working after filterexpression

[Alex]

Hi, I'm using raddatapager for my radlistview, the paging function works fine and filter functions works fine, as long as you don't use them at the same time. but all the paging function stops working after filterexpression gets call, here is source code:
aspx:
<telerik:RadListView ID="RadListView1" runat="server" ItemPlaceholderID="ItemContainer"
    AllowPaging="True" DataSourceID="LinqDataSource1"
    OnDataBound="RadListView1_DataBound">
    <LayoutTemplate>
        <asp:PlaceHolder ID="ItemContainer" runat="server" />
        <div class="test">
            <telerik:RadDataPager ID="RadDataPager1" runat="server" PagedControlID="RadListView1"
                EnableEmbeddedBaseStylesheet="false" PageSize="15" BackColor="#EEF5FB" BorderWidth="0"
                EnableEmbeddedSkins="false" EnableTheming="false" CssClass="pp">
                <Fields>
                    <telerik:RadDataPagerButtonField FieldType="Prev" />
                    <telerik:RadDataPagerButtonField FieldType="Next" />
                    <telerik:RadDataPagerTemplatePageField>
                        <PagerTemplate>
                            <asp:Button runat="server" ID="previousButton" CommandName="Page" CommandArgument="Previous"
                                Text="Previous" CssClass="PagerButton NextPage previousArrow" />
                        </PagerTemplate>
                    </telerik:RadDataPagerTemplatePageField>
                    <telerik:RadDataPagerButtonField FieldType="Numeric" />
                    <telerik:RadDataPagerTemplatePageField>
                        <PagerTemplate>
                            <asp:Button runat="server" ID="nextButton" CommandName="Page" CommandArgument="Next"
                                Text="Next" CssClass="PagerButton NextPage linkArrow" />
                        </PagerTemplate>
                    </telerik:RadDataPagerTemplatePageField>
                </Fields>
            </telerik:RadDataPager>
        </div>
    </LayoutTemplate>
    <ItemTemplate>

                <div class="resourceItemHeader">
                    <asp:HyperLink ID="HeaderLink" runat="server" Target="_blank" Text='<%#Eval("Name") %>'
                        NavigateUrl='<%#Eval("Url") %>'></asp:HyperLink>
                </div>
 
    </ItemTemplate>
</telerik:RadListView>
<asp:LinqDataSource ID="LinqDataSource1" runat="server" ContextTypeName="MHBCore.Data.MHBCoreDataContext"
    EntityTypeName="" TableName="ViewResourceItemJoinCategory">
</asp:LinqDataSource>

aspx.cs
    public int TypeId { get; set; }
    public int TopicId { get; set; }
    public int ExamId { get; set; }
    public string SearchKey { get; set; }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            RadListView1.CurrentPageIndex = 0;
            Load();
        }
    }

    public void Load()
    {
        RadListView1.FilterExpressions.Clear();
        if (TypeId > 0)
            RadListView1.FilterExpressions.Add(new RadListViewEqualToFilterExpression<int>("ResourceTypeId") { CurrentValue = TypeId });

        if (TopicId > 0)
            RadListView1.FilterExpressions.Add(new RadListViewEqualToFilterExpression<int>("TopicId") { CurrentValue = TopicId });

        if (ExamId > 0)
            RadListView1.FilterExpressions.Add(new RadListViewEqualToFilterExpression<int>("CategoryId") { CurrentValue = ExamId });

        if (!string.IsNullOrWhiteSpace(SearchKey))
            RadListView1.FilterExpressions.BuildExpression(expression => expression.Contains("Name", SearchKey).Or().Contains("TopicName", SearchKey).Or().Contains("Description", SearchKey));
        else
            RadListView1.FilterExpressions.BuildExpression();
        
        RadListView1.Rebind();

        RadListView1.FindControl("RadDataPager1").Visible = RadListView1.PageCount > 1;

    }

I got an javascript error, after I clicked "next" button:
Error: Sys.WebForms.PageRequestManagerServerErrorException: Identifier expected
Source File: http://localhost:90/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_Header1_RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3ac9d03845-da3c-45e9-ab05-79ee502af576%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2010.2.826.40%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3ad48d12ba-bfe2-4fcc-856e-a7c7557f0453%3a16e4e7cd%3addbfcb67%3a4a0008d8
Line: 15

[Maria Ilieva]

Hello Li,

Please review the following online demo which demonstrates similar scenario and works as expected. Test it on your side and verify what the difference in your case is.



Best wishes,
Maria Ilieva
the Telerik team

[Kalpesh]

Hi Maria,

I also have the same problem - paging (in my case - when I try to access previous pages - I am on 3rd page and try to go to 2nd page it throws the JS error.) not working properly.

So please look into this issue - we might be missing something. I have checked the demo on the site and it is working fine but in our case it is error out. Please assist.

Thanks.

[Maria Ilieva]

Hello Kalpesh,

It will be best if you could open a separate support ticket and send us runnable version of your application which demonstrates the exact error you are getting in this scenario. Thus we will be able to debug it locally and advise you further.

Regards,
Maria Ilieva
Telerik