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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 3001 to 4000 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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