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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 63001 to 64000 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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