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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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