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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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