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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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