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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 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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