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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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