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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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