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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 40001 to 41000 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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