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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 272001 to 273000 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