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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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