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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 270001 to 271000 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