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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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