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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 35001 to 36000 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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