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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 88001 to 89000 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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