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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 218001 to 219000 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