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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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