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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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