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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 61001 to 62000 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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