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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 47001 to 48000 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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