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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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