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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 124001 to 125000 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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