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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 209001 to 210000 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