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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 23001 to 24000 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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