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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 282001 to 283000 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