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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 25001 to 26000 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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