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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 175001 to 176000 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