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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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