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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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