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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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