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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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