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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 71001 to 72000 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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