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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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