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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 112001 to 113000 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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