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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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