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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 14001 to 15000 of 300000 Page: of 300 GoPage 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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