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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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