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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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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