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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 141001 to 142000 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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