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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 97001 to 98000 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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