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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 93001 to 94000 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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