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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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