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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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