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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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