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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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