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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 40001 to 41000 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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