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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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