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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 31001 to 32000 of 300000 Page: of 300 GoPage 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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