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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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