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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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