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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 225001 to 226000 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