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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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