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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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