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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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