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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 56001 to 57000 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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