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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 92001 to 93000 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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