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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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