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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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