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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 289001 to 290000 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