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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 18001 to 19000 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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