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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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