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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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