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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 122001 to 123000 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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