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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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