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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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