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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 88001 to 89000 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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