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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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