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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 8001 to 9000 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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