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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 286001 to 287000 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