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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 13001 to 14000 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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