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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 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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