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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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