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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 126001 to 127000 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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