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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 191001 to 192000 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