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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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