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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 142001 to 143000 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