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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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