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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 139001 to 140000 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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