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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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