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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 202001 to 203000 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