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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 71001 to 72000 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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