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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 87001 to 88000 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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