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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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