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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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