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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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