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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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