New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Marketing Assistant	Patricio Simpson	Spain	1 2 3 4 5
2	Sales Representative	Howard Snyder	Brazil	1 2 3 4 5
3	Sales Manager	Matti Karttunen	Spain	1 2 3 4 5
4	Sales Representative	Elizabeth Lincoln	France	1 2 3 4 5
5	Accounting Manager	Matti Karttunen	Italy	1 2 3 4 5
6	Sales Representative	Jaime Yorres	Austria	1 2 3 4 5
7	Accounting Manager	Pascale Cartrain	Austria	1 2 3 4 5
8	Sales Representative	Howard Snyder	Spain	1 2 3 4 5
9	Sales Representative	Pascale Cartrain	England	1 2 3 4 5
10	Sales Associate	Hanna Moos	Italy	1 2 3 4 5
11	Owner	Pascale Cartrain	Italy	1 2 3 4 5
12	Owner	Paul Henriot	Germany	1 2 3 4 5
13	Sales Agent	Matti Karttunen	France	1 2 3 4 5
14	Sales Consultant	Matti Karttunen	Argentina	1 2 3 4 5
15	Owner	Hanna Moos	England	1 2 3 4 5
16	Sales Manager	Matti Karttunen	Germany	1 2 3 4 5
17	Sales Manager	Georg Pipps	England	1 2 3 4 5
18	Sales Agent	Elizabeth Lincoln	England	1 2 3 4 5
19	Sales Consultant	Hanna Moos	Brazil	1 2 3 4 5
20	Accountant	Georg Pipps	Italy	1 2 3 4 5
21	Sales Agent	Paul Henriot	Bulgaria	1 2 3 4 5
22	Sales Representative	Patricio Simpson	Spain	1 2 3 4 5
23	Accountant	Howard Snyder	England	1 2 3 4 5
24	Sales Representative	Hanna Moos	Argentina	1 2 3 4 5
25	Accounting Manager	Elizabeth Lincoln	France	1 2 3 4 5
26	Sales Associate	Howard Snyder	Germany	1 2 3 4 5
27	Sales Associate	Elizabeth Lincoln	USA	1 2 3 4 5
28	Owner	Elizabeth Lincoln	Austria	1 2 3 4 5
29	Marketing Assistant	Pascale Cartrain	Argentina	1 2 3 4 5
30	Marketing Assistant	Georg Pipps	USA	1 2 3 4 5
31	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
32	Marketing Manager	Pascale Cartrain	Argentina	1 2 3 4 5
33	Marketing Manager	Patricio Simpson	England	1 2 3 4 5
34	Sales Consultant	Howard Snyder	France	1 2 3 4 5
35	Sales Representative	Georg Pipps	Argentina	1 2 3 4 5
36	Sales Manager	Matti Karttunen	England	1 2 3 4 5
37	Sales Representative	Elizabeth Lincoln	USA	1 2 3 4 5
38	Accountant	Elizabeth Lincoln	USA	1 2 3 4 5
39	Marketing Assistant	Paul Henriot	Austria	1 2 3 4 5
40	Marketing Assistant	Pascale Cartrain	England	1 2 3 4 5
41	Accounting Manager	Georg Pipps	England	1 2 3 4 5
42	Accounting Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
43	Marketing Manager	Antonio Moreno	Germany	1 2 3 4 5
44	Sales Consultant	Hanna Moos	Argentina	1 2 3 4 5
45	Sales Associate	Matti Karttunen	France	1 2 3 4 5
46	Sales Consultant	Hanna Moos	Germany	1 2 3 4 5
47	Sales Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
48	Sales Associate	Georg Pipps	England	1 2 3 4 5
49	Owner	Antonio Moreno	USA	1 2 3 4 5
50	Sales Representative	Howard Snyder	Italy	1 2 3 4 5
51	Sales Associate	Paul Henriot	Italy	1 2 3 4 5
52	Sales Representative	Patricio Simpson	Italy	1 2 3 4 5
53	Accountant	Elizabeth Lincoln	England	1 2 3 4 5
54	Sales Manager	Jaime Yorres	Spain	1 2 3 4 5
55	Sales Representative	Elizabeth Lincoln	Spain	1 2 3 4 5
56	Owner	Patricio Simpson	England	1 2 3 4 5
57	Accounting Manager	Jaime Yorres	Spain	1 2 3 4 5
58	Marketing Manager	Elizabeth Lincoln	Germany	1 2 3 4 5
59	Accountant	Pascale Cartrain	Argentina	1 2 3 4 5
60	Sales Associate	Hanna Moos	Argentina	1 2 3 4 5
61	Marketing Assistant	Georg Pipps	France	1 2 3 4 5
62	Accountant	Pascale Cartrain	Brazil	1 2 3 4 5
63	Sales Representative	Paul Henriot	France	1 2 3 4 5
64	Sales Associate	Paul Henriot	England	1 2 3 4 5
65	Sales Agent	Jaime Yorres	Bulgaria	1 2 3 4 5
66	Accounting Manager	Matti Karttunen	France	1 2 3 4 5
67	Sales Associate	Georg Pipps	Austria	1 2 3 4 5
68	Marketing Manager	Paul Henriot	Bulgaria	1 2 3 4 5
69	Marketing Assistant	Jaime Yorres	Bulgaria	1 2 3 4 5
70	Sales Agent	Elizabeth Lincoln	Austria	1 2 3 4 5
71	Owner	Jaime Yorres	USA	1 2 3 4 5
72	Sales Associate	Pascale Cartrain	Austria	1 2 3 4 5
73	Accountant	Antonio Moreno	Germany	1 2 3 4 5
74	Sales Manager	Antonio Moreno	France	1 2 3 4 5
75	Marketing Assistant	Pascale Cartrain	England	1 2 3 4 5
76	Owner	Antonio Moreno	England	1 2 3 4 5
77	Sales Manager	Elizabeth Lincoln	USA	1 2 3 4 5
78	Marketing Manager	Pascale Cartrain	USA	1 2 3 4 5
79	Owner	Hanna Moos	USA	1 2 3 4 5
80	Marketing Assistant	Jaime Yorres	Austria	1 2 3 4 5
81	Sales Agent	Hanna Moos	Spain	1 2 3 4 5
82	Accounting Manager	Antonio Moreno	Brazil	1 2 3 4 5
83	Sales Manager	Jaime Yorres	Italy	1 2 3 4 5
84	Sales Representative	Antonio Moreno	Germany	1 2 3 4 5
85	Sales Representative	Patricio Simpson	Italy	1 2 3 4 5
86	Owner	Jaime Yorres	Austria	1 2 3 4 5
87	Accounting Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
88	Marketing Manager	Howard Snyder	Austria	1 2 3 4 5
89	Sales Consultant	Georg Pipps	Argentina	1 2 3 4 5
90	Owner	Jaime Yorres	France	1 2 3 4 5
91	Marketing Manager	Georg Pipps	Argentina	1 2 3 4 5
92	Marketing Assistant	Matti Karttunen	England	1 2 3 4 5
93	Marketing Assistant	Pascale Cartrain	France	1 2 3 4 5
94	Sales Manager	Howard Snyder	Italy	1 2 3 4 5
95	Accounting Manager	Howard Snyder	Austria	1 2 3 4 5
96	Sales Associate	Jaime Yorres	Brazil	1 2 3 4 5
97	Owner	Elizabeth Lincoln	Austria	1 2 3 4 5
98	Sales Associate	Howard Snyder	Bulgaria	1 2 3 4 5
99	Marketing Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
100	Sales Manager	Hanna Moos	France	1 2 3 4 5


...221 222 223 224 225 226 227 228 229 230 ... Item 223001 to 224000 of 300000 Page: of 300 GoPage size:

Sort Ascending
Sort Descending
Clear Sorting
Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

Support & Learning Resources

Find Assistance

Submit a support ticket if you have an active license or trial
Post in the forum if you don't have access to support

Virtualization

Related Resources

Support & Learning Resources

Find Assistance