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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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