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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 75001 to 76000 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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