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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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