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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 115001 to 116000 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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