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


...241 242 243 244 245 246 247 248 249 250 ... Item 244001 to 245000 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