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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 211001 to 212000 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