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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 24001 to 25000 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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