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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 22001 to 23000 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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