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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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

<%@ 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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