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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 249001 to 250000 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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