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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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