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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 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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