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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 29001 to 30000 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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