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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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