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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 8001 to 9000 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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