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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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