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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 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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