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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 177001 to 178000 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