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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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