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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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