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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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