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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 19001 to 20000 of 300000 Page: of 300 GoPage 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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