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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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