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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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