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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 11001 to 12000 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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