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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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