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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 10001 to 11000 of 300000 Page: of 300 GoPage 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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