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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 136001 to 137000 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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