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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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