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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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