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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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