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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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