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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 122001 to 123000 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="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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