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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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