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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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