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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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