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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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