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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 49001 to 50000 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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