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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 5001 to 6000 of 300000 Page: of 300 GoPage 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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