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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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