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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 90001 to 91000 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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