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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 12001 to 13000 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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