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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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