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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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