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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 258001 to 259000 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