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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 170001 to 171000 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