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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 5001 to 6000 of 300000 Page: of 300 GoPage 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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