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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 21001 to 22000 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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