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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 54001 to 55000 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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