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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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