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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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