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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 14001 to 15000 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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