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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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