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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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