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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 57001 to 58000 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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