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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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