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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 72001 to 73000 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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