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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 40001 to 41000 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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