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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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