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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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