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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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