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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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