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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 77001 to 78000 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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