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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 80001 to 81000 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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