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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 103001 to 104000 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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