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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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