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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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