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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 39001 to 40000 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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