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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 285001 to 286000 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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