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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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