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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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