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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 233001 to 234000 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