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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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