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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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