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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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