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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 47001 to 48000 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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