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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 55001 to 56000 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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