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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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