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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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