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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 17001 to 18000 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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