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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 238001 to 239000 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