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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 239001 to 240000 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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