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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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