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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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