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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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