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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 86001 to 87000 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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