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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 105001 to 106000 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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