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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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