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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 4001 to 5000 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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