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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 37001 to 38000 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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