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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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