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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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