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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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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