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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 81001 to 82000 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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