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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 31001 to 32000 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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