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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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