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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 21001 to 22000 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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