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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 75001 to 76000 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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