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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 16001 to 17000 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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