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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 29001 to 30000 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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