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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 86001 to 87000 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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