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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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