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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 207001 to 208000 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