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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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