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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 20001 to 21000 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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