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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 83001 to 84000 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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