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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 85001 to 86000 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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