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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 114001 to 115000 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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