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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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