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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 225001 to 226000 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