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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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