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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 84001 to 85000 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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