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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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