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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 27001 to 28000 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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