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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 44001 to 45000 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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