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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 5001 to 6000 of 300000 Page: of 300 GoPage 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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