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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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