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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 4001 to 5000 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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