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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 126001 to 127000 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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