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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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