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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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