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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 13001 to 14000 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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