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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 12001 to 13000 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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