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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 11001 to 12000 of 300000 Page: of 300 GoPage 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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