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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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