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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 19001 to 20000 of 300000 Page: of 300 GoPage 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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