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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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