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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 29001 to 30000 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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