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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 93001 to 94000 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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