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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 45001 to 46000 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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