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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 204001 to 205000 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