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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 51001 to 52000 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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