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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 296001 to 297000 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="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ 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