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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 274001 to 275000 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="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ 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