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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 14001 to 15000 of 300000 Page: of 300 GoPage 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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