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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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