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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 62001 to 63000 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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