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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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