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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 14001 to 15000 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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