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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 14001 to 15000 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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