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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 29001 to 30000 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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