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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 49001 to 50000 of 300000 Page: of 300 GoPage 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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