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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 64001 to 65000 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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