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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 6001 to 7000 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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