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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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