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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 36001 to 37000 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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