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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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