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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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