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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 106001 to 107000 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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