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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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