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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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