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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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