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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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