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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 75001 to 76000 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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