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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 42001 to 43000 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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