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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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