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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 256001 to 257000 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