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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 23001 to 24000 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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