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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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