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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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