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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 80001 to 81000 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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