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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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