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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 298001 to 299000 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