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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 99001 to 100000 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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