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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 21001 to 22000 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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