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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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