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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 109001 to 110000 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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