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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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