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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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