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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 277001 to 278000 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