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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 6001 to 7000 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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