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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 32001 to 33000 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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