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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 5001 to 6000 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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