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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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