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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

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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>

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