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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 27001 to 28000 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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