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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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