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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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