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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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