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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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