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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 7001 to 8000 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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