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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 42001 to 43000 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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