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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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