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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 253001 to 254000 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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