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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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