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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 70001 to 71000 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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