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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 129001 to 130000 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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