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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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