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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 48001 to 49000 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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