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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 255001 to 256000 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