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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 185001 to 186000 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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