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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 15001 to 16000 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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