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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 266001 to 267000 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