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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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