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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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