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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 38001 to 39000 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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