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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 95001 to 96000 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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