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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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