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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 285001 to 286000 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