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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 210001 to 211000 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