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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 67001 to 68000 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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