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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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