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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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