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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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