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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 19001 to 20000 of 300000 Page: of 300 GoPage 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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