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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 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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