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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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