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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 99001 to 100000 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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