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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 22001 to 23000 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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