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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 15001 to 16000 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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