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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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