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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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