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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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