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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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