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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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