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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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