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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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