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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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