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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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