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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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