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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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