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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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