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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 25001 to 26000 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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