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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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