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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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