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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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

<%@ 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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