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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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