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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 287001 to 288000 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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