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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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