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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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