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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 109001 to 110000 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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