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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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