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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 279001 to 280000 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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