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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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