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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 103001 to 104000 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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