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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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