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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 47001 to 48000 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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