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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 254001 to 255000 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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