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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 70001 to 71000 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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