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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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