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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 46001 to 47000 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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