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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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