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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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