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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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