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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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