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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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