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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 69001 to 70000 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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