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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 26001 to 27000 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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