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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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