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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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