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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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