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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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