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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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