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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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