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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 24001 to 25000 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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