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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 100001 to 101000 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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