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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 122001 to 123000 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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