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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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